How do you write the formula for calcium fluoride?

Calcium is an alkaline metal in the second group on the periodic table. Fluorine is a gaseous non-metallic element that is part of the halogen family. Calcium fluoride is having the formula CaF2. In nature it occurs as the mineral fluorite or fluorspar. Pure calcium fluoride is used as a catalyst in dehydration and dehydrogenation and is used to fluoridate drinking water. Calcium fluoride appears as odorless gray powder or granules.

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