Bismuth(III) fluoride

Bismuth(III) fluoride, also known as bismuth trifluoride, is a chemical compound. Its chemical formula is BiF3. It has bismuth and fluoride ions in it. The bismuth is in its +3 oxidation state.
Preparation and properties.
Bismuth(III) fluoride is a gray-white powder. It does not dissolve in water. It is made by reacting bismuth(III) oxide with hydrofluoric acid or by reacting a large amount of bismuth with fluorine.