text:
Alkaline earth metal
From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Not to be confused with Alkali metal.
Alkaline earth metals
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
alkali metals ← → group 3
IUPAC group number
2
Name by element beryllium group
Trivial name alkaline earth metals
CAS group number
(US, pattern A-B-A)
IIA
old IUPAC number
(Europe, pattern A-B)
IIA
↓ Period
2
Beryllium (Be)
4
3
Magnesium (Mg)
12
4
Calcium (Ca)
20
5
Strontium (Sr)
38
6
Barium (Ba)
56
7
Radium (Ra)
88
Legend
primordial element
element by radioactive decay
Atomic number color:
black=solid
v
t
e
The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).[1] The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure.[2]
Structurally, they have in common an outer s- electron shell which is full;[2][3][4] that is, this orbital contains its full complement of two electrons, which these elements readily lose to form cations with charge +2, and an oxidation state of +2.[5]
All the discovered alkaline earth metals occur in nature.[6] Experiments have been conducted to attempt the synthesis of element 120, the next potential member of the group, but they have all met with failure.
Contents
[hide]
1 Characteristics
1.1 Chemical
1.1.1 Compounds and reactions
1.2 Physical and atomic
1.2.1 Nuclear stability
2 History
2.1 Etymology
2.2 Discovery
2.2.1 Beryllium
2.2.2 Magnesium
2.2.3 Calcium
2.2.4 Strontium
2.2.5 Barium
2.2.6 Radium
3 Occurrence
4 Production
5 Applications
6 Biological role and precautions
7 Extensions
8 Notes
9 References
10 Bibliography
11 Further reading
Characteristics[edit]
Chemical[edit]
As with other groups, the members of this family show patterns in their electronic configuration, especially the outermost shells, resulting in trends in chemical behavior:
Z
Element
No. of electrons/shell
Electron configuration[n 1]
4 beryllium 2, 2 [He] 2s2
12 magnesium 2, 8, 2 [Ne] 3s2
20 calcium 2, 8, 8, 2 [Ar] 4s2
38 strontium 2, 8, 18, 8, 2 [Kr] 5s2
56 barium 2, 8, 18, 18, 8, 2 [Xe] 6s2
88 radium 2, 8, 18, 32, 18, 8, 2 [Rn] 7s2
Most of the chemistry has been observed only for the first five members of the group. The chemistry of radium is not well-established due to its radioactivity;[2] thus, the presentation of its properties here is limited.
The alkaline earth metals are all silver-colored and soft, and have relatively low densities, melting points, and boiling points. In chemical terms, all of the alkaline metals react with the halogens to form the alkaline earth metal halides, all of which are ionic crystalline compounds (except for beryllium chloride, which is covalent). All the alkaline earth metals except beryllium also react with water to form strongly alkaline hydroxides and, thus, should be handled with great care. The heavier alkaline earth metals react more vigorously than the lighter ones.[2] The alkaline metals have the second-lowest first ionization energies in their respective periods of the periodic table[4] because of their somewhat low effective nuclear charges and the ability to attain a full outer shell configuration by losing just two electrons. The second ionization energy of all of the alkaline metals is also somewhat low.[2][4]
Beryllium is an exception: It does not react with water or steam, and its halides are covalent. If beryllium did form compounds with an ionization state of +2, it would polarize electron clouds that are near it very strongly and would cause extensive orbital overlap, since beryllium has a high charge density. All compounds that include beryllium have a covalent bond.[7] Even the compound beryllium fluoride, which is the most ionic beryllium compound, has a low melting point and a low electrical conductivity when melted.[8][9][10]
All the alkaline earth metals have two electrons in their valence shell, so the energetically preferred state of achieving a filled electron shell is to lose two electrons to form doubly charged positive ions.
Compounds and reactions[edit]
The alkaline earth metals all react with the halogens to form ionic halides, such as calcium chloride (CaCl
2), as well as reacting with oxygen to form oxides such as strontium oxide (SrO). Calcium, strontium, and barium react with water to produce hydrogen gas and their respective hydroxides, and also undergo transmetalation reactions to exchange ligands.
Alkaline earth metals fluorides solubility-related constants[n 2]
Metal
M2+
HE
[11][clarification needed]
F−
HE
[12][clarification needed]
"MF2"
unit
HE
MF2
lattice
energies
[13]
Solubility
[14][clarification needed]
Be 2,455 458 3,371 3,526 soluble
Mg 1,922 458 2,838 2,978 0.0012
Ca 1,577 458 2,493 2,651 0.0002
Sr 1,415 458 2,331 2,513 0.0008
Ba 1,361 458 2,277 2,373 0.006
Physical and atomic[edit]
The table below is a summary of the key physical and atomic properties of the alkaline earth metals.
Alkaline earth metal
Standard atomic weight
(u)[n 3][16][17]
Melting point
(K)
Melting point
(°C)
Boiling point
(K)[4]
Boiling point
(°C)[4]
Density
(g/cm3)
Electronegativity
(Pauling)
First ionization energy
(kJ·mol−1)
Covalent radius
(pm)[18]
Flame test color
Beryllium 9.012182(3) 1560 1287 2742 2469 1.85 1.57 899.5 105 White[19]
Magnesium 24.3050(6) 923 650 1363 1090 1.738 1.31 737.7 150 Brilliant-white[2]
Calcium 40.078(4) 1115 842 1757 1484 1.54 1.00 589.8 180 Brick-red[2]
Strontium 87.62(1) 1050 777 1655 1382 2.64 0.95 549.5 200 Crimson[2]
Barium 137.327(7) 1000 727 2170 1897 3.594 0.89 502.9 215 Apple-green[2]
Radium [226][n 4] 973 700 2010 1737 5.5 0.9 509.3 221 Crimson red[n 5]
Nuclear stability[edit]
This section needs expansion. You can help by adding to it. (November 2012)
Of the six alkaline earth metals, beryllium, calcium, barium, and radium have at least one naturally occurring radioisotope; magnesium and strontium do not. Beryllium-7, beryllium-10, and calcium-41 are trace radioisotopes; calcium-48 and barium-130 have very long half-lives and thus occur naturally on earth; and all isotopes of radium are radioactive. Calcium-48 is the lightest nuclide to undergo double beta decay.[21] Calcium and barium are weakly radioactive: calcium contains about 0.1874% cacium-41,[22] and barium contains about 0.1062% barium-130.[23]
History[edit]
Etymology[edit]
The alkaline earth metals are named after their oxides, the alkaline earths, whose old-fashioned names were beryllia, magnesia, lime, strontia, and baryta. These oxides are basic (alkaline) when combined with water. "Earth" is an old term applied by early chemists to nonmetallic substances that are insoluble in water and resistant to heating—properties shared by these oxides. The realization that these earths were not elements but compounds is attributed to the chemist Antoine Lavoisier. In his Traité Élémentaire de Chimie (Elements of Chemistry) of 1789 he called them salt-forming earth elements. Later, he suggested that the alkaline earths might be metal oxides, but admitted that this was mere conjecture. In 1808, acting on Lavoisier's idea, Humphry Davy became the first to obtain samples of the metals by electrolysis of their molten earths,[24] thus supporting Lavoisier's hypothesis and causing the group to be named the alkaline earth metals.
Discovery[edit]
The calcium compounds calcite and lime have been known and used since prehistoric times.[25] The same is true for the beryllium compounds beryl and emerald.[26] The other compounds of the alkaline earth metals were discovered starting in the early 15th century. The magnesium compound magnesium sulfate was first discovered in 1618 by a farmer at Epsom in England. Strontium carbonate was discovered in minerals in the Scottish village of Strontian in 1790. The last element is the least abundant: radioactive radium, which was extracted from uraninite in 1898.[27][28][29]
All elements except beryllium were isolated by electrolysis of molten compounds. Magnesium, calcium, and strontium were first produced by Humphry Davy in 1808, whereas beryllium was independently isolated by Friedrich Wöhler and Antoine Bussy in 1828 by reacting beryllium compounds with potassium. In 1910, radium was isolated as a pure metal by Curie and André-Louis Debierne also by electrolysis.[27][28][29]
Beryllium[edit]
Emerald, a variety of beryl, the mineral that beryllium was first known to be in.
Beryl, a mineral that contains beryllium, has been known since the time of the Ptolemaic Kingdom in Egypt.[26] Although it was originally thought that beryl was an aluminium silicate,[30] beryl was later found to contain a then-unknown element when, in 1797, Louis-Nicolas Vauquelin dissolved aluminium hydroxide from beryl in an alkali.[31] In 1828, Friedrich Wöhler[32] and Antoine Bussy[33] independently isolated this new element, beryllium, by the same method, which involved a reaction of beryllium chloride with metallic potassium; this reaction was not able to produce large ingots of beryllium.[34] It was not until 1898, when Paul Lebeau performed an electrolysis of a mixture of beryllium fluoride and sodium fluoride, that large pure samples of beryllium were produced.[34]
Magnesium[edit]
Magnesium was first produced by Sir Humphry Davy in England in 1808 using electrolysis of a mixture of magnesia and mercuric oxide.[35] Antoine Bussy prepared it in coherent form in 1831. Davy’s first suggestion for a name was magnium,[35] but the name magnesium is now used.
Calcium[edit]
Lime has been used as a material for building since 7000 to 14,000 BCE,[25] and kilns used for lime have been dated to 2,500 BCE in Khafaja, Mesopotamia.[36][37] Calcium as a material has been known since at least the first century, as the ancient Romans were known to have used calcium oxide by preparing it from lime. Calcium sulfate has been known to be able to set broken bones since the tenth century. Calcium itself, however, was not isolated until 1808, when Humphry Davy, in England, used electrolysis on a mixture of lime and mercuric oxide,[38] after hearing that Jöns Jakob Berzelius had prepared a calcium amalgam from the electrolysis of lime in mercury.
Strontium[edit]
In 1790, physician Adair Crawford, who had been working with barium, realized that Strontian ores showed different properties than other supposed ores of barium.[39] Therefore, he concluded that these ores contained new minerals, which were named strontites in 1793 by Thomas Charles Hope, a chemistry professor at the University of Glasgow,[40] who confirmed Crawford's discovery. Strontium was eventually isolated in 1808 by Sir Humphry Davy by electrolysis of a mixture of strontium chloride and mercuric oxide. The discovery was announced by Davy on 30 June 1808 at a lecture to the Royal Society.[41]
Barium[edit]
Barite, the material that was first found to contain barium.
Barite, a mineral containing barium, was first recognized as containing a new element in 1774 by Carl Scheele, although he was able to isolate only barium oxide. Barium oxide was isolated again two years later by Johan Gottlieb Gahn. Later in the 18th century, William Withering noticed a heavy mineral in the Cumberland lead mines, which are now known to contain barium. Barium itself was finally isolated in 1808 when Sir Humphry Davy used electrolysis with molten salts, and Davy named the element barium, after baryta. Later, Robert Bunsen and Augustus Matthiessen isolated pure barium by electrolysis of a mixture of barium chloride and ammonium chloride.[42][43]
Radium[edit]
While studying uraninite, on 21 December 1898, Marie and Pierre Curie discovered that, even after uranium had decayed, the material created was still radioactive. The material behaved somewhat similarly to barium compounds, although some properties, such as the color of the flame test and spectral lines, were much different. They announced the discovery of a new element on 26 December 1898 to the French Academy of Sciences.[44] Radium was named in 1899 from the word radius, meaning ray, as radium emitted power in the form of rays.[45]
Occurrence[edit]
Series of alkaline earth metals.
Beryllium occurs in the earth's crust at a concentration of two to six parts per million (ppm),[46] much of which is in soils, where it has a concentration of six ppm. Beryllium is one of the rarest elements in seawater, even rarer than elements such as scandium, with a concentration of 0.2 parts per trillion.[47][48] However, in freshwater, beryllium is somewhat more common, with a concentration of 0.1 parts per billion.[49]
Magnesium and calcium are very common in the earth's crust, with calcium the fifth-most-abundant element, and magnesium the eighth. None of the alkaline earth metals are found in their elemental state, but magnesium and calcium are found in many rocks and minerals: magnesium in carnallite, magnesite, and dolomite; and calcium in chalk, limestone, gypsum, and anhydrite.[2]
Strontium is the fifteenth-most-abundant element in the Earth's crust. Most strontium is found in the minerals celestite and strontianite.[50] Barium is slightly less common, much of it in the mineral barite.[51]
Radium, being a decay product of uranium, is found in all uranium-bearing ores.[52] Due to its relatively short half-life,[53] radium from the Earth's early history has decayed, and present-day samples have all come from the much slower decay of uranium.[52]
Production[edit]
This section needs expansion. You can help by adding to it. (November 2012)
Emerald, a variety of beryl, is a naturally occurring compound of beryllium.
Most beryllium is extracted from beryllium hydroxide. One production method is sintering, done by mixing beryl, sodium fluorosilicate, and soda at high temperatures to form sodium fluoroberyllate, aluminium oxide, and silicon dioxide. A solution of sodium fluoroberyllate and sodium hydroxide in water is then used to form beryllium hydroxide by precipitation. Alternatively, in the melt method, powdered beryl is heated to high temperature, cooled with water, then heated again slightly in sulfuric acid, eventually yielding beryllium hydroxide. The beryllium hydroxide from either method then produces beryllium fluoride and beryllium chloride through a somewhat long process. Electrolysis or heating of these compounds can then produce beryllium.[7]
In general, strontium carbonate is extracted from the mineral celestite through two methods: by leaching the celestite with sodium carbonate, or in a more complicated way involving coal.[54]
To produce barium, barite ore is separated from quartz, sometimes by froth flotation methods, resulting in relatively pure barite. Carbon is then used to reduce the baryte into barium sulfide, which is dissolved with other elements to form other compounds, such as barium nitrate. These in turn are thermally decompressed into barium oxide, which eventually yields pure barium after a reaction with aluminium.[51] The most important supplier of barium is China, which produces more than 50% of world supply.[55]
Applications[edit]
Beryllium is used mostly for military applications,[56] but there are other uses of beryllium, as well. In electronics, beryllium is used as a p-type dopant in some semiconductors,[57] and beryllium oxide is used as a high-strength electrical insulator and heat conductor.[58] Due to its light weight and other properties, beryllium is also used in mechanics when stiffness, light weight, and dimensional stability are required at wide temperature ranges.[59][60]
Magnesium has many different uses. One of its most common uses was in industry, where it has many structural advantages over other materials such as aluminium, although this usage has fallen out of favor recently due to magnesium's flammability.[61] Magnesium is also often alloyed with aluminium or zinc to form materials with more desirable properties than any pure metal.[62] Magnesium has many other uses in industrial applications, such as having a role in the production of iron and steel, and the production of titanium.[63]
Calcium also has many uses. One of its uses is as a reducing agent in the separation of other metals from ore, such as uranium. It is also used in the production of the alloys of many metals, such as aluminium and copper alloys, and is also used to deoxidize alloys as well. Calcium also has a role in the making of cheese, mortars, and cement.[64]
Strontium and barium do not have as many applications as the lighter alkaline earth metals, but still have uses. Strontium carbonate is often used in the manufacturing of red fireworks,[65] and pure strontium is used in the study of neurotransmitter release in neurons.[66][67] Barium has some use in vacuum tubes to remove gases,[51] and barium sulfate has many uses in the petroleum industry,[4] as well as other industries.[4][51][68]
Due to its radioactivity, radium no longer has many applications, but it used to have many. Radium used to be used often in luminous paints,[69] although this use was stopped after workers got sick.[70] As people used to think that radioactivity was a good thing, radium used to be added to drinking water, toothpaste, and many other products, although they are also not used anymore due to their health effects.[61] Radium is no longer even used for its radioactive properties, as there are more powerful and safer emitters than radium.[71][72]
Biological role and precautions[edit]
This section needs expansion. You can help by adding to it. (January 2013)
Magnesium and calcium are ubiquitous and essential to all known living organisms. They are involved in more than one role, with, for example, magnesium or calcium ion pumps playing a role in some cellular processes, magnesium functioning as the active center in some enzymes, and calcium salts taking a structural role, most notably in bones.
Strontium plays an important role in marine aquatic life, especially hard corals, which use strontium to build their exoskeletons. It and barium have some uses in medicine, for example "barium meals" in radiographic imaging, whilst strontium compounds are employed in some toothpastes. Excessive amounts of strontium-90 are toxic due to its radioactivity and strontium-90 mimics calcium and then can kill.
Beryllium and radium, however, are toxic. Beryllium's low aqueous solubility means it is rarely available to biological systems; it has no known role in living organisms and, when encountered by them, is usually highly toxic.[7] Radium has a low availability and is highly radioactive, making it toxic to life.
Extensions[edit]
The next alkaline earth metal after radium is thought to be element 120, although this may not be true due to relativistic effects.[73] The synthesis of element 120 was first attempted in March 2007, when a team at the Flerov Laboratory of Nuclear Reactions in Dubna bombarded plutonium-244 with iron-58 ions; however, no atoms were produced, leading to a limit of 400 fb for the cross-section at the energy studied.[74] In April 2007, a team at the GSI attempted to create element 120 by bombarding uranium-238 with nickel-64, although no atoms were detected, leading to a limit of 1.6 pb for the reaction. Synthesis was again attempted at higher sensitivities, although no atoms were detected. Other reactions have been tried, although all have been met with failure.[75]
The chemistry of element 120 is predicted to be closer to that of calcium or strontium[76] instead of barium or radium. This is unusual as periodic trends would predict element 120 to be more reactive than barium and radium. This lowered reactivity is due to the expected energies of element 120's valence electrons, increasing element 120's ionization energy and decreasing the metallic and ionic radii.[76]
Although simple extrapolation would put element 170 as the next member of this series, calculations suggest that the next element of this series might actually be element 166.
Notes[edit]
Jump up ^ Noble gas notation is used for conciseness; the nearest noble gas that precedes the element in question is written first, and then the electron configuration is continued from that point forward.
Jump up ^ Energies are given in −kJ/mol, solubilities in mol/L; HE means "hydration energy".
Jump up ^ The number given in parentheses refers to the measurement uncertainty. This uncertainty applies to the least significant figure(s) of the number prior to the parenthesized value (i.e., counting from rightmost digit to left). For instance, 7000100794000000000♠1.00794(7) stands for 7000100794000000000♠1.00794±0.00007, whereas 7000100794000000000♠1.00794(72) stands for 7000100794000000000♠1.00794±0.00072.[15]
Jump up ^ The element does not have any stable nuclides, and a value in brackets indicates the mass number of the longest-lived isotope of the element.[16][17]
Jump up ^ The color of the flame test of pure radium has never been observed; the crimson-red color is an extrapolation from the flame test color of its compounds.[20]
References[edit]
Jump up ^ International Union of Pure and Applied Chemistry (2005). Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005). Cambridge (UK): RSC–IUPAC. ISBN 0-85404-438-8. pp. 51. Electronic version..
^ Jump up to: a b c d e f g h i j Royal Society of Chemistry. "Visual Elements: Group 2–The Alkaline Earth Metals". Visual Elements. Royal Society of Chemistry. Archived from the original on 5 October 2011. Retrieved 13 January 2012.
Jump up ^ "Periodic Table: Atomic Properties of the Elements" (PDF). nist.gov. National Institute of Standards and Technology. September 2010. Archived (PDF) from the original on 9 August 2012. Retrieved 17 February 2012.
^ Jump up to: a b c d e f g Lide, D. R., ed. (2003). CRC Handbook of Chemistry and Physics (84th ed.). Boca Raton, FL: CRC Press.
Jump up ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0-08-037941-9.
Jump up ^ "Abundance in Earth's Crust". WebElements.com. Archived from the original on 9 March 2007. Retrieved 14 April 2007.
^ Jump up to: a b c Jakubke, Hans-Dieter; Jeschkeit, Hans, eds. (1994). Concise Encyclopedia Chemistry. trans. rev. Eagleson, Mary. Berlin: Walter de Gruyter.
Jump up ^ Bell, N. A. (1972). "Beryllium halide and pseudohalides". In Emeléus, Harry Julius; Sharpe, A. G. Advances in inorganic chemistry and radiochemistry, Volume 14. New York: Academic Press. pp. 256–277. ISBN 978-0-12-023614-5.
Jump up ^ Walsh, Kenneth A. (2009-08-01). Beryllium chemistry and processing. ASM International. pp. 99–102, 118–119. ISBN 978-0-87170-721-5.
Jump up ^ Hertz, Raymond K. (1987). "General analytical chemistry of beryllium". In Coyle, Francis T. Chemical analysis of metals: a symposium. ASTM. pp. 74–75. ISBN 978-0-8031-0942-1.
Jump up ^ Wiberg, Wiberg & Holleman 2001, pp. XXXVI–XXXVII.
Jump up ^ Wiberg, Wiberg & Holleman 2001, p. XXXVI.
Jump up ^ Lide 2004, p. 12-23.
Jump up ^ Wiberg, Wiberg & Holleman 2001, p. 1073.
Jump up ^ "Standard Uncertainty and Relative Standard Uncertainty". CODATA reference. National Institute of Standards and Technology. Archived from the original on 16 October 2011. Retrieved 26 September 2011.
^ Jump up to: a b Wieser, Michael E.; Berglund, Michael (2009). "Atomic weights of the elements 2007 (IUPAC Technical Report)" (PDF). Pure Appl. Chem. IUPAC. 81 (11): 2131–2156. doi:10.1351/PAC-REP-09-08-03. Archived (PDF) from the original on 2 November 2012. Retrieved 7 February 2012.
^ Jump up to: a b Wieser, Michael E.; Coplen, Tyler B. (2011). "Atomic weights of the elements 2009 (IUPAC Technical Report)" (PDF). Pure Appl. Chem. IUPAC. 83 (2): 359–396. doi:10.1351/PAC-REP-10-09-14. Archived (PDF) from the original on 11 February 2012. Retrieved 11 February 2012.
Jump up ^ Slater, J. C. (1964). "Atomic Radii in Crystals". Journal of Chemical Physics. 41 (10): 3199–3205. Bibcode:1964JChPh..41.3199S. doi:10.1063/1.1725697.
Jump up ^ Jensen, William B. (2003). "The Place of Zinc, Cadmium, and Mercury in the Periodic Table" (PDF). Journal of Chemical Education. American Chemical Society. 80 (8): 952–961. Bibcode:2003JChEd..80..952J. doi:10.1021/ed080p952. Archived from the original (PDF) on 2010-06-11. Retrieved 2012-05-06.
Jump up ^ Kirby, H. W; Salutsky, Murrell L (1964). The Radiochemistry of Radium. National Academies Press.
Jump up ^ G. Audi; A. H. Wapstra; C. Thibault; J. Blachot; O. Bersillon (2003). "The NUBASE evaluation of nuclear and decay properties" (PDF). Nuclear Physics A. 729: 3–128. Bibcode:2003NuPhA.729....3A. doi:10.1016/j.nuclphysa.2003.11.001. Archived from the original (PDF) on 2008-09-23.
Jump up ^ Richard B. Firestone (15 March 2010). "Isotopes of Calcium (Z=20)". Lawrence Berkeley National Laboratory. Archived from the original on 6 May 2012. Retrieved 12 June 2012.
Jump up ^ Richard B. Firestone (15 March 2010). "Isotopes of Barium (Z=56)". Lawrence Berkeley National Laboratory. Archived from the original on 6 May 2012. Retrieved 12 June 2012.
Jump up ^ Robert E. Krebs (2006). The history and use of our earth's chemical elements: a reference guide. Greenwood Publishing Group. pp. 65–81. ISBN 0-313-33438-2.
^ Jump up to: a b Miller, M. Michael. "Commodity report:Lime" (PDF). United States Geological Survey. Archived (PDF) from the original on 2011-11-12. Retrieved 2012-03-06.
^ Jump up to: a b Weeks 1968, p. 535.
^ Jump up to: a b Weeks, Mary Elvira (1932). "The discovery of the elements. X. The alkaline earth metals and magnesium and cadmium". Journal of Chemical Education. 9 (6): 1046. Bibcode:1932JChEd...9.1046W. doi:10.1021/ed009p1046.
^ Jump up to: a b Weeks, Mary Elvira (1932). "The discovery of the elements. XII. Other elements isolated with the aid of potassium and sodium: Beryllium, boron, silicon, and aluminum". Journal of Chemical Education. 9 (8): 1386. Bibcode:1932JChEd...9.1386W. doi:10.1021/ed009p1386.
^ Jump up to: a b Weeks, Mary Elvira (1933). "The discovery of the elements. XIX. The radioactive elements". Journal of Chemical Education. 10 (2): 79. Bibcode:1933JChEd..10...79W. doi:10.1021/ed010p79.
Jump up ^ Weeks 1968, p. 537.
Jump up ^ Vauquelin, Louis-Nicolas (1798). "De l'Aiguemarine, ou Béril; et découverie d'une terre nouvelle dans cette pierre". Annales de Chimie (26): 155–169. Archived from the original on 2016-04-27.
Jump up ^ Wöhler, Friedrich (1828). "Ueber das Beryllium und Yttrium". Annalen der Physik. 89 (8): 577–582. Bibcode:1828AnP....89..577W. doi:10.1002/andp.18280890805.
Jump up ^ Bussy, Antoine (1828). "D'une travail qu'il a entrepris sur le glucinium". Journal de Chimie Medicale (4): 456–457. Archived from the original on 2016-05-22.
^ Jump up to: a b Weeks 1968, p. 539.
^ Jump up to: a b Davy, H. (1808). "Electro-chemical researches on the decomposition of the earths; with observations on the metals obtained from the alkaline earths, and on the amalgam procured from ammonia". Philosophical Transactions of the Royal Society of London. 98: 333–370. Bibcode:1808RSPT...98..333D. doi:10.1098/rstl.1808.0023. JSTOR 107302. Archived from the original on 2015-09-30.
Jump up ^ Williams, Richard (2004). Lime Kilns and Lime Burning. p. 4. ISBN 978-0-7478-0596-0.
Jump up ^ Oates, J. A. H (2008-07-01). Lime and Limestone: Chemistry and Technology, Production and Uses. ISBN 978-3-527-61201-7.
Jump up ^ Davy H (1808). "Electro-chemical researches on the decomposition of the earths; with observations on the metals obtained from the alkaline earths, and on the amalgam procured from ammonia". Philosophical Transactions of the Royal Society of London. 98: 333–370. Bibcode:1808RSPT...98..333D. doi:10.1098/rstl.1808.0023. Archived from the original on 2015-09-30.
Jump up ^ Crawford, Adair (1790). "On the medicinal properties of the muriated barytes". Medical Communications. London. 2: 301–359.
Jump up ^ Murray, T. (1993). "Elemementary Scots: The Discovery of Strontium". Scottish Medical Journal. 38 (6): 188–189. doi:10.1177/003693309303800611. PMID 8146640.
Jump up ^ Davy, Humphry (1808). researches on the decomposition of the earths; with observations on the metals obtained from the alkaline earths, and on the amalgam procured from ammonia. 98. Philosophical Transactions of the Royal Society of London. pp. 333–370. Archived from the original on 2015-09-30.
Jump up ^ "Masthead". Annalen der Chemie und Pharmacie. 93 (3): fmi–fmi. 1855. doi:10.1002/jlac.18550930301.
Jump up ^ Wagner, Rud.; Neubauer, C.; Deville, H. Sainte-Claire; Sorel; Wagenmann, L.; Techniker; Girard, Aimé (1856). "Notizen". Journal für Praktische Chemie. 67: 490–508. doi:10.1002/prac.18560670194.
Jump up ^ Curie, Pierre; Curie, Marie; Bémont, Gustave (1898). "Sur une nouvelle substance fortement radio-active, contenue dans la pechblende (On a new, strongly radioactive substance contained in pitchblende)". Comptes Rendus. 127: 1215–1217. Archived from the original on 2009-08-06. Retrieved 2009-08-01.
Jump up ^ "radium". Online Etymology Dictionary. Archived from the original on 13 January 2012. Retrieved 20 August 2011.
Jump up ^ Merck contributors (2006). O'Neil, Marydale J.; Heckelman, Patricia E.; Roman, Cherie B., eds. The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals (14th ed.). Whitehouse Station, NJ, USA: Merck Research Laboratories, Merck & Co., Inc. ISBN 0-911910-00-X.
Jump up ^ Emsley, John (2001). Nature's Building Blocks: An A–Z Guide to the Elements. Oxford, England, UK: Oxford University Press. ISBN 0-19-850340-7.
Jump up ^ "Abundance in oceans". Mark Winter, The University of Sheffield and WebElements Ltd, UK. WebElements. Archived from the original on 5 August 2011. Retrieved 6 August 2011.
Jump up ^ "Abundance in stream water". Mark Winter, The University of Sheffield and WebElements Ltd, UK. WebElements. Archived from the original on 4 August 2011. Retrieved 6 August 2011.
Jump up ^ Ober, Joyce A. "Mineral Commodity Summaries 2010: Strontium" (PDF). United States Geological Survey. Archived (PDF) from the original on 2010-07-16. Retrieved 2010-05-14.
^ Jump up to: a b c d Kresse, Robert; Baudis, Ulrich; Jäger, Paul; Riechers, H. Hermann; Wagner, Heinz; Winkler, Jocher; Wolf, Hans Uwe (2007). "Barium and Barium Compounds". In Ullman, Franz. Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH. doi:10.1002/14356007.a03_325.pub2.
^ Jump up to: a b "Radium" Archived 2012-11-15 at the Wayback Machine., Los Alamos National Laboratory. Retrieved on 2009-08-05.
Jump up ^ Malley, Marjorie C (2011-08-25). Radioactivity. pp. 115–. ISBN 978-0-19-983178-4. Archived from the original on 2015-09-05.
Jump up ^ Kemal, Mevlüt; Arslan, V; Akar, A; Canbazoglu, M (1996). Production of SrCO, by black ash process: Determination of reductive roasting parameters. p. 401. ISBN 9789054108290. Archived from the original on 2016-04-27.
Jump up ^ Miller, M. M. "Barite" (PDF). USGS.gov. Archived (PDF) from the original on 2012-07-07.
Jump up ^ Petzow, G. N.; Aldinger, F.; Jönsson, S.; Welge, P.; Van Kampen, V.; Mensing, T.; Brüning, T. (2005). "Beryllium and Beryllium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.a04_011.pub2. ISBN 3527306730.
Jump up ^ Diehl, Roland (2000). High-power diode lasers. Springer. p. 104. ISBN 3-540-66693-1.
Jump up ^ "Purdue engineers create safer, more efficient nuclear fuel, model its performance". Purdue University. 27 September 2005. Archived from the original on 27 May 2012. Retrieved 18 September 2008.
Jump up ^ Davis, Joseph R. (1998). "Beryllium". Metals handbook. ASM International. pp. 690–691. ISBN 978-0-87170-654-6.
Jump up ^ Schwartz, Mel M. (2002). Encyclopedia of materials, parts, and finishes. CRC Press. p. 62. ISBN 1-56676-661-3.
^ Jump up to: a b Gray, Theodore (2009). The Elements: A Visual Exploration of Every Known Atom in the Universe. New York: Black Dog & Leventhal Publishers. ISBN 978-1-57912-814-2.
Jump up ^ Baker, Hugh D. R.; Avedesian, Michael (1999). Magnesium and magnesium alloys. Materials Park, OH: Materials Information Society. p. 4. ISBN 0-87170-657-1.
Jump up ^ Amundsen, K.; Aune, T. K.; Bakke, P.; Eklund, H. R.; Haagensen, J. Ö.; Nicolas, C.; Rosenkilde, C.; Van Den Bremt, S.; Wallevik, O. (2003). "Magnesium". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.a15_559. ISBN 3527306730.
Jump up ^ Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
Jump up ^ Moreno, Teresa; Querol, Xavier; Alastuey, Andrés; Cruz Minguillón, Mari; Pey, Jorge; Rodriguez, Sergio; Vicente Miró, José; Felis, Carles; Gibbons, Wes (2007). "Recreational atmospheric pollution episodes: Inhalable metalliferous particles from firework displays". Atmospheric Environment. 41 (5): 913. Bibcode:2007AtmEn..41..913M. doi:10.1016/j.atmosenv.2006.09.019.
Jump up ^ Miledi, R. (1966). "Strontium as a Substitute for Calcium in the Process of Transmitter Release at the Neuromuscular Junction". Nature. 212 (5067): 1233–4. Bibcode:1966Natur.212.1233M. doi:10.1038/2121233a0. PMID 21090447.
Jump up ^ Hagler D.J., Jr; Goda Y. (2001). "Properties of synchronous and asynchronous release during pulse train depression in cultured hippocampal neurons". J. Neurophysiol. 85 (6): 2324–34. PMID 11387379.
Jump up ^ Jones, Chris J.; Thornback, John (2007). Medicinal applications of coordination chemistry. Royal Society of Chemistry. p. 102. ISBN 0-85404-596-1.
Jump up ^ Terrill Jr, JG; Ingraham Sc, 2nd; Moeller, DW (1954). "Radium in the healing arts and in industry: Radiation exposure in the United States". Public Health Reports. 69 (3): 255–62. doi:10.2307/4588736. PMC 2024184  . PMID 13134440.
Jump up ^ "Mass Media & Environmental Conflict – Radium Girls". Archived from the original on 2009-07-21. Retrieved 2009-08-01.
Jump up ^ Committee On Radiation Source Use And Replacement, National Research Council (U.S.); Nuclear And Radiation Studies Board, National Research Council (U.S.) (January 2008). Radiation source use and replacement: Abbreviated version. p. 24. ISBN 978-0-309-11014-3. Archived from the original on 2015-09-05.
Jump up ^ Bentel, Gunilla Carleson (1996). Radiation therapy planning. p. 8. ISBN 978-0-07-005115-7. Archived from the original on 2015-09-05.
Jump up ^ Gäggeler, Heinz W. (5–7 November 2007). "Gas Phase Chemistry of Superheavy Elements" (PDF). Lecture Course Texas A&M. Archived from the original (PDF) on 20 February 2012. Retrieved 26 February 2012.
Jump up ^ Oganessian, Yu. Ts.; Utyonkov, V.; Lobanov, Yu.; Abdullin, F.; Polyakov, A.; Sagaidak, R.; Shirokovsky, I.; Tsyganov, Yu.; Voinov, A. (2009). "Attempt to produce element 120 in the 244Pu+58Fe reaction". Phys. Rev. C. 79 (2): 024603. Bibcode:2009PhRvC..79b4603O. doi:10.1103/PhysRevC.79.024603.
Jump up ^ http://fias.uni-frankfurt.de/kollo/Duellmann_FIAS-Kolloquium.pdf[permanent dead link]
^ Jump up to: a b Seaborg, G. T. (c. 2006). "transuranium element (chemical element)". Encyclopædia Britannica. Archived from the original on 30 November 2010. Retrieved 16 March 2010.
Bibliography[edit]
Weeks, Mary Elvira; Leichester, Henry M. (1968). Discovery of the Elements. Easton, PA: Journal of Chemical Education. LCCCN 68-15217.
Further reading[edit]
Group 2 – Alkaline Earth Metals, Royal Chemistry Society.
Hogan, C.Michael. 2010. Calcium. eds. A.Jorgensen, C. Cleveland. Encyclopedia of Earth. National Council for Science and the Environment.
Maguire, Michael E. "Alkaline Earth Metals." Chemistry: Foundations and Applications. Ed. J. J. Lagowski. Vol. 1. New York: Macmillan Reference USA, 2004. 33–34. 4 vols. Gale Virtual Reference Library. Thomson Gale.
Silberberg, M.S., Chemistry: The molecular nature of Matter and Change (3e édition, McGraw-Hill 2009)
Petrucci R.H., Harwood W.S. et Herring F.G., General Chemistry (8e édition, Prentice-Hall 2002)
hide
v
t
e
Periodic table (Large cells)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
H He
2
Li Be B C N O F Ne
3
Na Mg Al Si P S Cl Ar
4
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
6
Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
7
Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
Alkali metal Alkaline earth metal Lanthanide Actinide Transition metal Post-transition metal Metalloid Reactive nonmetal Noble gas Unknown
chemical
properties
show
v
t
e
Periodic table
Periodic table forms
Standard
18-column
18-column, large cells
32-column, large cells
Alternative
Alternatives
Janet's left step table
Extended
Extension beyond the 7th period
Aufbau
Fricke
Pyykkö
Sets of elements
By periodic table structure
Groups
1 (Alkali metals)
2 (Alkaline earth metals)
3
4
5
6
7
8
9
10
11
12
13
14
15 (Pnictogens)
16 (Chalcogens)
17 (Halogens)
18 (Noble gases)
Periods
1
2
3
4
5
6
7
8+
Aufbau
Fricke
Pyykkö
Blocks
s-block
p-block
d-block
f-block
g-block
Aufbau principle
By metallicity
Metals
Alkali metals
Alkaline earth metals
Lanthanides
Actinides
Transition metals
Post-transition metals
Metalloids
Lists of metalloids by source
Dividing line
Nonmetals
Reactive nonmetals
Noble gases
Other sets
Nutritional elements
Platinum-group metals (PGM)
Rare-earth elements
Refractory metals
Precious metals
Coinage metals
Noble metal
Heavy metals
Native metals
Transuranium elements
Transactinide elements
Major actinides
Minor actinides
Elements
Lists
By: Abundance (in humans)
Atomic properties
Nuclear stability
Production
Symbol
Properties
Atomic weight
Crystal structure
Electron affinity
Electron configuration
Electronegativity
Allen
Pauling
Goldschmidt classification
Maximum valence
Data pages
Abundance
Atomic radius
Boiling point
Critical point
Density
Elasticity
Electrical resistivity
Electron affinity
Electron configuration
Electronegativity
Hardness
Heat capacity
Heat of fusion
Heat of vaporization
Ionization energy
Melting point
Oxidation state
Speed of sound
Thermal conductivity
Thermal expansion coefficient
Vapor pressure
History
Element discoveries
Mendeleev's predictions
Naming
etymology
controversies
for places
for people
in East Asia
See also
IUPAC
nomenclature
systematic element name
Trivial name
Dmitri Mendeleev
Book
Category
Chemistry Portal
show
v
t
e
Alkaline earth metals
Beryllium
Be
Atomic Number: 4
Atomic Weight: 9.012182
Melting Point: 1560.15 K
Boiling Point: 2742 K
Specific mass: 1.85 g/cm3
Electronegativity: 1.57
Magnesium
Mg
Atomic Number: 12
Atomic Weight: 24.3050
Melting Point: 923.15 K
Boiling Point: 1363 K
Specific mass: 1.738 g/cm3
Electronegativity: 1.31
Calcium
Ca
Atomic Number: 20
Atomic Weight: 40.078
Melting Point: 1112.15 K
Boiling Point: 1757 K
Specific mass: 1.54 g/cm3
Electronegativity: 1
Strontium
Sr
Atomic Number: 38
Atomic Weight: 87.62
Melting Point: 1042.15 K
Boiling Point: 1655 K
Specific mass: 2.64 g/cm3
Electronegativity: 0.95
Barium
Ba
Atomic Number: 56
Atomic Weight: 137.327
Melting Point: 1002.15 K
Boiling Point: 2170 K
Specific mass: 3.594 g/cm3
Electronegativity: 0.89
Radium
Ra
Atomic Number: 88
Atomic Weight: [226]
Melting Point: 973.15 K
Boiling Point: 2010 K
Specific mass: 5.5 g/cm3
Electronegativity: 0.9
Authority control
BNE: XX543194
BNF: cb12276929w (data)
GND: 4152626-0
LCCN: sh85003595
NDL: 00560341
Retrieved from "https://en.wikipedia.org/w/index.php?title=Alkaline_earth_metal&oldid=845483758"
Categories:
Alkaline earth metals
Periodic table
Groups (periodic table)
Hidden categories:
Webarchive template wayback links
All articles with dead external links
Articles with dead external links from July 2017
Articles with permanently dead external links
Wikipedia articles needing clarification from April 2013
Articles to be expanded from November 2012
All articles to be expanded
Articles using small message boxes
Articles to be expanded from January 2013
Wikipedia articles with BNE identifiers
Wikipedia articles with BNF identifiers
Wikipedia articles with GND identifiers
Wikipedia articles with LCCN identifiers
Wikipedia articles with NDL identifiers
Navigation menu
Personal tools
Not logged in
Talk
Contributions
Create account
Log in
Namespaces
Article
Talk
Variants
Views
Read
Edit
View history
More
Search
Navigation
Main page
Contents
Featured content
Current events
Random article
Donate to Wikipedia
Wikipedia store
Interaction
Help
About Wikipedia
Community portal
Recent changes
Contact page
Tools
What links here
Related changes
Upload file
Special pages
Permanent link
Page information
Wikidata item
Cite this page
Print/export
Create a book
Download as PDF
Printable version
In other projects
Wikimedia Commons
Languages
Afrikaans
العربية
Aragonés
Asturianu
Azərbaycanca
বাংলা
Bân-lâm-gú
Беларуская
Беларуская (тарашкевіца)
भोजपुरी
Български
བོད་ཡིག
Bosanski
Català
Чӑвашла
Čeština
Cymraeg
Dansk
Deutsch
Eesti
Ελληνικά
Español
Esperanto
Euskara
فارسی
Fiji Hindi
Français
Gaeilge
Galego
贛語
ગુજરાતી
客家語/Hak-kâ-ngî
한국어
Հայերեն
हिन्दी
Hrvatski
Bahasa Indonesia
Interlingua
Íslenska
Italiano
עברית
Basa Jawa
ქართული
Қазақша
Kiswahili
Kreyòl ayisyen
Latina
Latviešu
Limburgs
La .lojban.
Lumbaart
Magyar
Македонски
മലയാളം
मराठी
Bahasa Melayu
Mìng-dĕ̤ng-ngṳ̄
မြန်မာဘာသာ
Nederlands
नेपाल भाषा
日本語
Norsk
Norsk nynorsk
ଓଡ଼ିଆ
Oʻzbekcha/ўзбекча
ਪੰਜਾਬੀ
Plattdüütsch
Polski
Português
Română
Runa Simi
Русский
Саха тыла
Scots
Shqip
සිංහල
Simple English
Slovenčina
Slovenščina
Soomaaliga
Српски / srpski
Srpskohrvatski / српскохрватски
Suomi
Svenska
தமிழ்
తెలుగు
ไทย
Türkçe
Українська
Tiếng Việt
文言
吴语
ייִדיש
Yorùbá
粵語
中文
87 more
Edit links
This page was last edited on 12 June 2018, at 02:42 (UTC).
Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.
Privacy policy
About Wikipedia
Disclaimers
Contact Wikipedia
Developers
Cookie statement
Mobile view
Enable previews

values: mw-page-base noprint

values: mw-head-base noprint

values: firstHeading firstHeading en

values: siteSub noprint

values: mw-jump-link #mw-head

values: mw-jump-link #p-search

values:
note
hatnote navigation-not-searchable

value: th

attrs: colspan style

value: tr

values: display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ffdead; border:1px solid black; margin:-1px;

values: empty-cells:hidden; border:none; padding:0; border-spacing:1px; border-collapse:separate; margin:0;

values: background-color:transparent; margin:0; padding:0; text-align:center; border:none;

values: text-align:center; width:1em; margin-top:1px; background:transparent; border:1px solid #a9a9a9;

values:
/wiki/File:Be-140g.jpg
image
Lump of beryllium

values: Beryllium: alkaline earth metal; primordial; solid

values: text-align:center; vertical-align:bottom; width:210px; background:#f0f0f0; border:2px solid #6e6e8e; ;

values: Magnesium: alkaline earth metal; primordial; solid

values: Image: Calcium stored under argon atmosphere

values: Calcium: alkaline earth metal; primordial; solid

values: Image: Strontium floating in paraffin oil

values: Strontium: alkaline earth metal; primordial; solid

values: Image: Barium stored under argon atmosphere

values: Barium: alkaline earth metal; primordial; solid

values: Image: Radium electroplated on copper foil and covered with polyurethane to prevent reaction with air

values: Radium: alkaline earth metal; from decay; solid

values: text-align:center; vertical-align:bottom; width:210px; background:#f0f0f0; border:2px dashed #6e6e8e; ;

values:
/wiki/Primordial_element
mw-redirect
Primordial element

values: border:2px solid #6e6e8e; background:#f0f0f0;

values: border:2px dashed #6e6e8e; background:#f0f0f0;padding:0 2px;

values: Template:Periodic table (alkaline earth metals)

values: Template talk:Periodic table (alkaline earth metals)

values: text-align:center; border:1px solid #a9a9a9; background:#f8f8f8; padding:2px; width:1em;

values:
/wiki/Standard_temperature_and_pressure
mw-redirect
Standard temperature and pressure

values:
/wiki/Electronic_configuration
mw-redirect
Electronic configuration

values:
/wiki/Full_outer_shell
mw-redirect
Full outer shell

values:
/wiki/Positive_(electricity)
mw-redirect
Positive (electricity)

values:
/wiki/Hydrogen_gas
mw-redirect
Hydrogen gas

values:
headerSort
0
columnheader button
Sort ascending

values: this sfn missing matching citation (April 2013)

values:
noprint Inline-Template
margin-left:0.1em; white-space:nowrap;

values: float: left; margin: 1px; font-size:85%;

values:
/wiki/Atomic_weight
mw-redirect
Atomic weight

values:
/wiki/Pauling_scale
mw-redirect
Pauling scale

values:
/wiki/Kilojoule_per_mole
mw-redirect
Kilojoule per mole

values: plainlinks metadata ambox mbox-small-left ambox-content

attrs: alt src width height class srcset data-file-width data-file-height

values:
/wiki/Louis-Nicolas_Vauquelin
mw-redirect
Louis-Nicolas Vauquelin

values:
/wiki/Mercuric_oxide
mw-redirect
Mercuric oxide

values:
/wiki/J%C3%B6ns_Jakob_Berzelius
mw-redirect
Jöns Jakob Berzelius

values:
/wiki/Carl_Scheele
mw-redirect
Carl Scheele

values:
/wiki/Sir_Humphry_Davy
mw-redirect
Sir Humphry Davy

values:
/wiki/Compounds_of_barium
mw-redirect
Compounds of barium

values:
/wiki/Parts_per_million
mw-redirect
Parts per million

values: Sodium fluoroberyllate (page does not exist)

values:
/wiki/P-type_semiconductor
mw-redirect
P-type semiconductor

values:
/wiki/Electrical_insulator
mw-redirect
Electrical insulator

values:
/wiki/Heat_conductor
mw-redirect
Heat conductor

values: Edit section: Biological role and precautions

values:
/wiki/Barium_meal
mw-redirect
Barium meal

values:
/wiki/Metallic_radius
mw-redirect
Metallic radius

values:
/wiki/Noble_gas_notation
mw-redirect
Noble gas notation

values:
/wiki/Significant_figure
mw-redirect
Significant figure

values:
reflist mw-references-wrap
list-style-type: decimal;

values: International Union of Pure and Applied Chemistry

values: National Institute of Standards and Technology

values:
nofollow
external text
//doi.org/10.1351%2FPAC-REP-09-08-03

values:
nofollow
external text
//doi.org/10.1351%2FPAC-REP-10-09-14

values:
nofollow
external text
//doi.org/10.1063%2F1.1725697

values:
nofollow
external text
//doi.org/10.1021%2Fed080p952

values:
/wiki/Nuclear_Physics_A
mw-redirect
Nuclear Physics A

values:
nofollow
external text
//doi.org/10.1021%2Fed009p1046

values:
nofollow
external text
//doi.org/10.1021%2Fed009p1386

values:
nofollow
external text
//doi.org/10.1021%2Fed010p79

values:
nofollow
external text
//doi.org/10.1002%2Fandp.18280890805

values:
nofollow
external text
//doi.org/10.1098%2Frstl.1808.0023

values:
nofollow
external text
//www.jstor.org/stable/107302

values:
/wiki/PubMed_Identifier
mw-redirect
PubMed Identifier

values:
nofollow
external text
//www.ncbi.nlm.nih.gov/pubmed/8146640

values:
nofollow
external text
//doi.org/10.1002%2Fjlac.18550930301

values:
nofollow
external text
//doi.org/10.1002%2Fprac.18560670194

values:
/wiki/The_University_of_Sheffield
mw-redirect
The University of Sheffield

values:
nofollow
external text
http://periodic.lanl.gov/88.shtml

values:
nofollow
external text
//doi.org/10.1002%2F14356007.a15_559

values:
nofollow
external text
//doi.org/10.1038%2F2121233a0

values:
nofollow
external text
//www.ncbi.nlm.nih.gov/pubmed/21090447

values:
nofollow
external text
//www.ncbi.nlm.nih.gov/pubmed/11387379

values:
nofollow
external text
//doi.org/10.2307%2F4588736

values:
nofollow
external text
//www.ncbi.nlm.nih.gov/pubmed/13134440

values:
nofollow
external text
//doi.org/10.1103%2FPhysRevC.79.024603

values: -moz-column-width: 30em; -webkit-column-width: 30em; column-width: 30em; list-style-type: decimal;

values:
/wiki/J._J._Lagowski
mw-redirect
J. J. Lagowski

values: Template:Periodic table (32 columns, compact)

values: Template talk:Periodic table (32 columns, compact)

values: Meitnerium, 109 (unknown chemical properties)

values: Darmstadtium, 110 (unknown chemical properties)

values: Roentgenium, 111 (unknown chemical properties)

values: Copernicium, 112 (post-transition metal)

values: Nihonium, 113 (unknown chemical properties)

values: Flerovium, 114 (unknown chemical properties)

values: Moscovium, 115 (unknown chemical properties)

values: Livermorium, 116 (unknown chemical properties)

values: Tennessine, 117 (unknown chemical properties)

values: Oganesson, 118 (unknown chemical properties)

values:
0
table-layout:fixed; width:100%;
periodic-table-legend

values:
/wiki/Reactive_nonmetal
mw-redirect
Reactive nonmetal

values: padding:0em 0.25em border: 1px solid #a2a9b1; width:100%; line-height:120%; text-align:center; vertical-align:top; font-size:85%; background:#f8f8f8; margin:0; font-size:90%; margin-top:0.5em; padding:0.3em;

values: nowraplinks collapsible expanded navbox-inner mw-collapsible mw-made-collapsible

values:
/wiki/Fricke_model
mw-redirect
Fricke model

values:
/wiki/Pyykk%C3%B6_model
mw-redirect
Pyykkö model

values: Properties of metals, metalloids and nonmetals

values:
/wiki/List_of_metalloid_lists
mw-redirect
List of metalloid lists

values: Dividing line between metals and nonmetals

values: Template:Periodic table (nutritional elements)

values:
row
navbox-group
width:1%;white-space: normal;

values: List of elements by stability of isotopes

values: List of world production chemical elements

values: Template:Periodic table (electron affinities)

values: Periodic table (electron configurations)

values: Template:Periodic table (electronegativity by Allen scale)

values: Template:Periodic table (electronegativity by Pauling scale)

values: Atomic radii of the elements (data page)

values: Boiling points of the elements (data page)

values: Critical points of the elements (data page)

values: Elastic properties of the elements (data page)

values: Electrical resistivities of the elements (data page)

values: Electron configurations of the elements (data page)

values: Electronegativities of the elements (data page)

values: Heat capacities of the elements (data page)

values: Heats of fusion of the elements (data page)

values: Heats of vaporization of the elements (data page)

values: Ionization energies of the elements (data page)

values: Melting points of the elements (data page)

values: List of oxidation states of the elements

values: Speeds of sound of the elements (data page)

values: Thermal conductivities of the elements (data page)

values: Thermal expansion coefficients of the elements (data page)

values: Vapor pressures of the elements (data page)

values: Timeline of chemical element discoveries

values: List of chemical element name etymologies

values: List of chemical elements naming controversies

values: List of places used in the names of chemical elements

values: List of people whose names are used in chemical element names

values: Chemical elements in East Asian languages

values: nowraplinks hlist collapsible autocollapse navbox-inner mw-collapsible mw-made-collapsible mw-collapsed

values: border-spacing: 0px; text-align:left;width:auto; margin-left:auto; margin-right:auto;

values: nowraplinks collapsible autocollapse navbox-inner mw-collapsible mw-made-collapsible mw-collapsed

values:
nofollow
external text
https://d-nb.info/gnd/4152626-0

values: Category:Webarchive template wayback links

values: Category:All articles with dead external links

values: Category:Articles with dead external links from July 2017

values: Category:Articles with permanently dead external links

values: Category:Wikipedia articles needing clarification from April 2013

values: Category:Articles to be expanded from November 2012

values: Category:Articles using small message boxes

values: Category:Articles to be expanded from January 2013

values: Category:Wikipedia articles with BNE identifiers

values: Category:Wikipedia articles with BNF identifiers

values: Category:Wikipedia articles with GND identifiers

values: Category:Wikipedia articles with LCCN identifiers

values: Category:Wikipedia articles with NDL identifiers

values: Discussion about edits from this IP address [ctrl-alt-n]

values: A list of edits made from this IP address [ctrl-alt-y]

values: You are encouraged to create an account and log in; however, it is not mandatory

values: You're encouraged to log in; however, it's not mandatory. [ctrl-alt-o]

values:
/wiki/Alkaline_earth_metal
View the content page [ctrl-alt-c]
c

values: Discussion about the content page [ctrl-alt-t]

values: p-namespaces navigation vectorTabs p-namespaces-label

values:
p-variants
navigation
vectorMenu emptyPortlet
p-variants-label

values: Past revisions of this page [ctrl-alt-h]

values: p-views navigation vectorTabs p-views-label

values:
p-cactions
navigation
vectorMenu emptyPortlet
p-cactions-label

values:
mw-wiki-logo
/wiki/Main_Page
Visit the main page

values:
/wiki/Main_Page
Visit the main page [ctrl-alt-z]
z

values: portal navigation p-wikibase-otherprojects p-wikibase-otherprojects-label

values:
interlanguage-link interwiki-af
display: none;

values: فلز قلوي ترابي – Arabic

values:
interlanguage-link interwiki-an
display: none;

values:
interlanguage-link interwiki-ast
display: none;

values:
interlanguage-link interwiki-az
display: none;

values: মৃৎ ক্ষার ধাতু – Bangla

values:
interlanguage-link interwiki-bn
display: none;

values:
interlanguage-link interwiki-zh-min-nan
display: none;

values: Шчолачназямельныя металы – Belarusian

values:
interlanguage-link interwiki-be
display: none;

values: Лужназямельныя мэталы – Belarusian (Taraškievica orthography)

values:
interlanguage-link interwiki-be-x-old
display: none;

values: एल्कलाइन मटिया धातु – Bhojpuri

values:
interlanguage-link interwiki-bh
display: none;

values: Алкалоземен метал – Bulgarian

values:
interlanguage-link interwiki-bg
display: none;

values: སེ་རུལ་ཅན་གྱི་ལྕགས་རིགས། – Tibetan

values:
interlanguage-link interwiki-bo
display: none;

values:
interlanguage-link interwiki-bs
display: none;

values:
interlanguage-link interwiki-ca
display: none;

values: Сĕлтĕ çĕр металлĕсем – Chuvash

values:
interlanguage-link interwiki-cv
display: none;

values:
interlanguage-link interwiki-cs
display: none;

values:
interlanguage-link interwiki-cy
display: none;

values:
interlanguage-link interwiki-da
display: none;

values:
interlanguage-link interwiki-de
display: none;

values:
interlanguage-link interwiki-et
display: none;

values: Αλκαλικές γαίες – Greek

values:
interlanguage-link interwiki-el
display: none;

values:
interlanguage-link interwiki-eo
display: none;

values:
interlanguage-link interwiki-eu
display: none;

values: فلزهای قلیایی خاکی – Persian

values:
interlanguage-link interwiki-fa
display: none;

values:
interlanguage-link interwiki-hif
display: none;

values:
interlanguage-link interwiki-ga
display: none;

values:
interlanguage-link interwiki-gl
display: none;

values:
interlanguage-link interwiki-gan
display: none;

values: આલ્ક્લાઇન પાર્થિવ ધાતુ – Gujarati

values:
interlanguage-link interwiki-gu
display: none;

values:
interlanguage-link interwiki-hak
display: none;

values: 알칼리 토금속 – Korean

values:
interlanguage-link interwiki-ko
display: none;

values: Հողալկալիական մետաղներ – Armenian

values:
interlanguage-link interwiki-hy
display: none;

values: क्षारीय पार्थिव धातु – Hindi

values:
interlanguage-link interwiki-hr
display: none;

values:
interlanguage-link interwiki-ia
display: none;

values:
interlanguage-link interwiki-is
display: none;

values:
interlanguage-link interwiki-it
display: none;

values: מתכת אלקלית עפרורית – Hebrew

values:
interlanguage-link interwiki-he
display: none;

values:
interlanguage-link interwiki-jv
display: none;

values: ტუტემიწა ლითონები – Georgian

values:
interlanguage-link interwiki-ka
display: none;

values: Сілтілік жер металдар – Kazakh

values:
interlanguage-link interwiki-kk
display: none;

values:
interlanguage-link interwiki-sw
display: none;

values:
interlanguage-link interwiki-ht
display: none;

values:
interlanguage-link interwiki-la
display: none;

values:
interlanguage-link interwiki-lv
display: none;

values:
interlanguage-link interwiki-li
display: none;

values:
interlanguage-link interwiki-jbo
display: none;

values:
interlanguage-link interwiki-lmo
display: none;

values:
interlanguage-link interwiki-hu
display: none;

values: Земноалкален метал – Macedonian

values:
interlanguage-link interwiki-mk
display: none;

values: ആൽക്കലൈൻ എർത്ത് ലോഹങ്ങൾ – Malayalam

values:
interlanguage-link interwiki-ml
display: none;

values: अल्कमृदा धातू – Marathi

values:
interlanguage-link interwiki-mr
display: none;

values:
interlanguage-link interwiki-cdo
display: none;

values: အယ်ကာလိုင်း သတ္တုများ – Burmese

values:
interlanguage-link interwiki-my
display: none;

values:
interlanguage-link interwiki-nl
display: none;

values: एल्कालाइन चा धातु – Newari

values:
interlanguage-link interwiki-new
display: none;

values:
interlanguage-link interwiki-ja
display: none;

values:
interlanguage-link interwiki-no
display: none;

values:
interlanguage-link interwiki-nn
display: none;

values: ପାର୍ଥିବ କ୍ଷାରୀୟ ଧାତୁ – Odia

values:
interlanguage-link interwiki-or
display: none;

values:
interlanguage-link interwiki-uz
display: none;

values: ਖ਼ਾਰੀ ਭੌਂ ਧਾਤ – Punjabi

values:
interlanguage-link interwiki-pa
display: none;

values:
interlanguage-link interwiki-nds
display: none;

values:
https://pl.wikipedia.org/wiki/Berylowce
Berylowce – Polish
pl
pl
interlanguage-link-target

values:
interlanguage-link interwiki-pl
display: none;

values:
interlanguage-link interwiki-ro
display: none;

values:
interlanguage-link interwiki-qu
display: none;

values: Щёлочноземельные металлы – Russian

values: Алкалин сир метал – Sakha

values:
interlanguage-link interwiki-sah
display: none;

values:
interlanguage-link interwiki-sco
display: none;

values: Grupi i dytë i elementeve kimike – Albanian

values:
interlanguage-link interwiki-sq
display: none;

values: ක්ෂාරීය පාංශු ලෝහ – Sinhala

values:
interlanguage-link interwiki-si
display: none;

values:
interlanguage-link interwiki-simple
display: none;

values:
interlanguage-link interwiki-sk
display: none;

values:
interlanguage-link interwiki-sl
display: none;

values:
interlanguage-link interwiki-so
display: none;

values: Земноалкални метал – Serbian

values:
interlanguage-link interwiki-sr
display: none;

values:
interlanguage-link interwiki-sh
display: none;

values:
interlanguage-link interwiki-fi
display: none;

values:
interlanguage-link interwiki-sv
display: none;

values: காரக்கனிம மாழைகள் – Tamil

values:
interlanguage-link interwiki-ta
display: none;

values: క్షారమృత్తిక లోహము – Telugu

values:
interlanguage-link interwiki-te
display: none;

values: โลหะแอลคาไลน์เอิร์ท – Thai

values:
interlanguage-link interwiki-th
display: none;

values:
interlanguage-link interwiki-tr
display: none;

values: Лужноземельні метали – Ukrainian

values:
interlanguage-link interwiki-uk
display: none;

values:
interlanguage-link interwiki-vi
display: none;

values:
interlanguage-link interwiki-wuu
display: none;

values: אלקאלי ערד מעטאל – Yiddish

values:
interlanguage-link interwiki-yi
display: none;

values:
interlanguage-link interwiki-yo
display: none;

values:
interlanguage-link interwiki-zh-yue
display: none;

values: All languages (initial selection from common choices by you and others)

values: /static/images/wikimedia-button-1.5x.png 1.5x, /static/images/wikimedia-button-2x.png 2x

values: /static/images/poweredby_mediawiki_132x47.png 1.5x, /static/images/poweredby_mediawiki_176x62.png 2x

values:
suggestions
display: none; font-size: 13px;

values: mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject page-Alkaline_earth_metal rootpage-Alkaline_earth_metal skin-vector action-view


text:
Chris Harrison
From Wikipedia, the free encyclopedia
Jump to: navigation, search
For other people named Chris Harrison, see Christopher Harrison (disambiguation) and Chris Harrison (American football).
Chris Harrison
Harrison at the premiere for The Proposal in June 2009
Born
Christopher Bryan Harrison
(1971-07-26) July 26, 1971 (age 46)
Dallas, Texas, United States
Occupation
Television personality
Years active
1993–present
Spouse(s)
Gwen Harrison
(m. 1994; div. 2012)
Children
2
Christopher Bryan Harrison (born July 26, 1971)[1] is an American television and game show host, best known for his role as host of the ABC reality television dating show, The Bachelor since 2002, and its spin-offs The Bachelorette since 2003, Bachelor Pad from 2010 to 2012, Bachelor in Paradise since 2014, the first season of Bachelor in Paradise: After Paradise in 2015, Bachelor Live in 2016, and The Bachelor Winter Games in 2018. He has also served as the host of the syndicated version of Who Wants to Be a Millionaire? since 2015.
Contents
[hide]
1 Career
2 Personal life
3 References
4 External links
Career[edit]
From 1993–99, Harrison worked as a sports reporter at CBS affiliate KWTV in Oklahoma City. He also worked briefly for TVG Network, a horse racing channel and was the host of Designers' Challenge on HGTV. In 2001, Harrison hosted the short-lived game show, Mall Masters for GSN.[2]
In 2002, Harrison guest starred on Sabrina, the Teenage Witch, as a music show host, episode, "Ping, Ping a Song".
On November 23, 2008, Harrison hosted the American Music Awards pre-show live on ABC. His co-hosts were Dancing with the Stars judge Carrie Ann Inaba, and Pussycat Dolls member Nicole Scherzinger.
The TV Guide Network, now known as "Pop," announced that Harrison was signed to anchor its live red carpet awards coverage, beginning with the 2009 Primetime Emmy Awards in September.[3] In 2011, Harrison and Brooke Burns co-hosted the game show You Deserve It. He has also co-hosted Hollywood 411 on the former TV Guide Network.[4] He has hosted Designers' Challenge on HGTV and Mall Masters on the Game Show Network.
In April 2015, Disney-ABC announced that Harrison would replace Terry Crews as host of the syndicated version of Who Wants to Be a Millionaire? for the 2015–16 season.[5] GSN began airing reruns of this show December 18, 2017, marking a return to the network for him since the cancellation of Mall Masters.
Personal life[edit]
Harrison was born in Dallas, Texas.[1] He was married to his college sweetheart, Gwen Harrison.[6] They have two children, Joshua and Taylor.[7] In May 2012, after 18 years of marriage, Harrison and his wife announced they were ending their marriage.[7]
He graduated from Lake Highlands High School in 1989.[8][9] He attended Oklahoma City University on a soccer scholarship.[10] He was a member of the Kappa Sigma fraternity.
He was recently diagnosed with amnesia. He was a featured celebrity for the greatest race in the world, the Indianapolis 500. In May 2018, he forgot how much this race means to the city of Indianapolis. On the day after the race, the ABC broadcast in the city chose to show the Indianapolis 500 banquet instead of the season opener of the Bachelorette. Sorry Chris we forgot you even had a show worth watching. lol rip
References[edit]
^ Jump up to: a b "Chris Harrison". TVGuide.com. Archived from the original on September 27, 2015. Retrieved July 21, 2015.
Jump up ^ "Chris Harrison Named New Host of 'Who Wants to Be a Millionaire?'". CloserWeekly.com. April 14, 2015. Retrieved February 5, 2017.
Jump up ^ Tim Molloy (29 July 2009). "Carrie Ann Inaba, Chris Harrison Join TV Guide Network's Red Carpet Coverage". TVGuide.com. Retrieved 2009-07-29.
Jump up ^ Host Of The Bachelor Gets A New Gig Archived June 1, 2008, at the Wayback Machine.
Jump up ^ Nellie Andreeva (13 April 2015). "Chris Harrison Named New Host Of 'Who Wants To Be A Millionaire', Replacing Terry Crews". deadline.com. Retrieved 2015-04-13.
Jump up ^ "Bachelor Pad Host Chris Harrison: King of the Rose". People.
^ Jump up to: a b "Chris Harrison, Wife Gwen Are Splitting". People.
Jump up ^ "Notable grad: Chris Harrison – Lake Highlands High School class of 1989". lakehighlands.advocatemag. February 22, 2018. Retrieved March 12, 2018.
Jump up ^ Sheri Stern. "Everything's coming up roses for Lake Highlands grad". White Rock Lake Weekly. [permanent dead link]
Jump up ^ "Chris Harrison - The Bachelor". ABC.
External links[edit]
ABC Profile
Chris Harrison on IMDb
Media offices
Preceded by
Tom Bergeron Host of Miss America
2005 Succeeded by
James Denton
Preceded by
Mario Lopez Hosts of Miss America with Brooke Burke
2011-2013 and 2016 Succeeded by
Incumbent
Preceded by
NA Hosts of Miss America with Lara Spencer
2014-2015 Succeeded by
Incumbent
[hide]
v
t
e
The Bachelor
U.S. seasons
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Bachelors
Alex Michel
Aaron Buerge
Andrew Firestone
Bob Guiney
Jesse Palmer
Byron Velvick
Charlie O'Connell
Travis Lane Stork
Lorenzo Borghese
Andrew Baldwin
Brad Womack
Matt Grant
Jason Mesnick
Jake Pavelka
Sean Lowe
Juan Pablo Galavis
Chris Soules
Nick Viall
Arie Luyendyk Jr.
Contestants
Mandy Clemens
Catherine Warren
Shayne Lamas
Melissa Rycroft
Tenley Molzahn
Gia Allemand
Keltie Colleen
Jamie Otis
Catherine Giudici
Brittany Fetkin
Ashley Iaconetti
The Bachelorette
Seasons
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Bachelorettes
Trista Rehn
DeAnna Pappas
Jillian Harris
Ali Fedotowsky
Andi Dorfman
Kaitlyn Bristowe
JoJo Fletcher
Rachel Lindsay
Becca Kufrin
Contestants
Ryan Sutter
Jesse Csincsak
Ryan Hoag
Ed Swiderski
David Homyk
Evan Bass
Chad Johnson
Jordan Rodgers
Kenny Layne
Clay Harbor
Colton Underwood
International
versions
Australia
1
Sam Frost
2
3
Sophie Monk
Canada
India
Tamil Nadu (State of India)
Other spin-offs
Bachelor Pad
Bachelor in Paradise
1
2
3
4
5
Bachelor in Paradise: After Paradise
Episodes
The Bachelor Winter Games
International Spin-offs
Bachelor in Paradise Australia
International
versions
Australia
1
2
3
4
5
Brazil
1
Canada
1
Brad Smith
2
3
Chris Leroux
Romania
Cătălin Botezatu
United Kingdom
4
Gavin Henson
5
Spencer Matthews
New Zealand
1
2
3
Authority control
WorldCat Identities
LCCN: nb2009025531
VIAF: 56110508
Retrieved from "https://en.wikipedia.org/w/index.php?title=Chris_Harrison&oldid=843585151"
Categories:
1971 births
Living people
People from Dallas
American game show hosts
American horse racing announcers
Beauty pageant hosts
American television talk show hosts
Hidden categories:
Webarchive template wayback links
All articles with dead external links
Articles with dead external links from August 2017
Articles with permanently dead external links
Articles with hCards
Wikipedia articles with LCCN identifiers
Wikipedia articles with VIAF identifiers
Navigation menu
Personal tools
Not logged in
Talk
Contributions
Create account
Log in
Namespaces
Article
Talk
Variants
Views
Read
Edit
View history
More
Search
Navigation
Main page
Contents
Featured content
Current events
Random article
Donate to Wikipedia
Wikipedia store
Interaction
Help
About Wikipedia
Community portal
Recent changes
Contact page
Tools
What links here
Related changes
Upload file
Special pages
Permanent link
Page information
Wikidata item
Cite this page
Print/export
Create a book
Download as PDF
Printable version
In other projects
Wikimedia Commons
Languages
한국어
Italiano
עברית
Svenska
中文
Edit links
This page was last edited on 30 May 2018, at 03:19.
Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.
Privacy policy
About Wikipedia
Disclaimers
Contact Wikipedia
Developers
Cookie statement
Mobile view
Enable previews

key: html

type: local

value: div

attrs: id class

values: mw-page-base noprint

values: mw-head-base noprint

value: a

attrs: id class lang

values: firstHeading firstHeading en

values: siteSub noprint

values: jump-to-nav mw-jump

attrs: href class title

attrs: href title

attrs: role class

values:
note
hatnote navigation-not-searchable

value: span

value: img

attrs: alt src width height srcset data-file-width data-file-height

attrs: href class

value: i

value: td

values:
/wiki/Bachelor_Live
mw-redirect
Bachelor Live

values: Who Wants to Be a Millionaire (U.S. game show)

values:
/wiki/Sabrina,_the_Teenage_Witch
mw-redirect
Sabrina, the Teenage Witch

values:
/wiki/American_Music_Awards
mw-redirect
American Music Awards

values:
/wiki/TV_Guide_Network
mw-redirect
TV Guide Network

values:
/wiki/Primetime_Emmy_Awards
mw-redirect
Primetime Emmy Awards

values:
reflist mw-references-wrap
list-style-type: decimal;

values:
nofollow
https://www.imdb.com/name/nm1047343/
external text

values:
/wiki/James_Denton_(actor)
mw-redirect
James Denton (actor)

values:
/wiki/The_Bachelor_(season_3)
mw-redirect
The Bachelor (season 3)

values:
/wiki/The_Bachelor_(season_4)
mw-redirect
The Bachelor (season 4)

values:
/wiki/The_Bachelor_(season_6)
mw-redirect
The Bachelor (season 6)

values:
/wiki/The_Bachelor_(season_7)
mw-redirect
The Bachelor (season 7)

values:
/wiki/The_Bachelor_(season_8)
mw-redirect
The Bachelor (season 8)

values:
/wiki/Catherine_Warren
mw-redirect
Catherine Warren

values: List of Bachelor in Paradise: After Paradise episodes

values: nowraplinks collapsible autocollapse navbox-inner

values:
nofollow
external text
https://viaf.org/viaf/56110508

values: Category:American horse racing announcers

values: Category:American television talk show hosts

values: Category:Webarchive template wayback links

values: Category:All articles with dead external links

values: Category:Articles with dead external links from August 2017

values: Category:Articles with permanently dead external links

values: Category:Wikipedia articles with LCCN identifiers

values: Category:Wikipedia articles with VIAF identifiers

values: Discussion about edits from this IP address [ctrl-alt-n]

values: A list of edits made from this IP address [ctrl-alt-y]

values: You are encouraged to create an account and log in; however, it is not mandatory

values: You're encouraged to log in; however, it's not mandatory. [ctrl-alt-o]

values:
/wiki/Chris_Harrison
View the content page [ctrl-alt-c]
c

values: Discussion about the content page [ctrl-alt-t]

values: p-namespaces navigation vectorTabs p-namespaces-label

values:
p-variants
navigation
vectorMenu emptyPortlet
p-variants-label

values: Past revisions of this page [ctrl-alt-h]

values: p-views navigation vectorTabs p-views-label

values:
p-cactions
navigation
vectorMenu emptyPortlet
p-cactions-label

values:
mw-wiki-logo
/wiki/Main_Page
Visit the main page

values:
/wiki/Main_Page
Visit the main page [ctrl-alt-z]
z

values: Featured content – the best of Wikipedia

values: Find background information on current events

values:
/wiki/Special:Random
Load a random article [ctrl-alt-x]
x

values: portal navigation p-navigation p-navigation-label

values: Guidance on how to use and edit Wikipedia

values: About the project, what you can do, where to find things

values: A list of recent changes in the wiki [ctrl-alt-r]

values: portal navigation p-interaction p-interaction-label

values: List of all English Wikipedia pages containing links to this page [ctrl-alt-j]

values: Recent changes in pages linked from this page [ctrl-alt-k]

values:
/wiki/Wikipedia:File_Upload_Wizard
Upload files [ctrl-alt-u]
u

values: A list of all special pages [ctrl-alt-q]

values: Permanent link to this revision of the page

values: Link to connected data repository item [ctrl-alt-g]

values: Printable version of this page [ctrl-alt-p]

values: portal navigation p-wikibase-otherprojects p-wikibase-otherprojects-label

values: 크리스 해리슨 – Korean

values: כריס הריסון – Hebrew

values: 克里斯·哈里森 – Chinese

values: mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject page-Chris_Harrison rootpage-Chris_Harrison skin-vector action-view