How many fluorine atoms bond with calcium to form calcium fluoride?
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Answer:
The formula of calcium fluoride is CaF2.
Explanation:
Calcium, a Group 2 metal, commonly forms a Ca2+ ion. On the other hand, fluorine, a Group 7 non-metal, commonly forms an F− ion. The necessity of electrical neutrality ensures that 2×F− binds to one Ca2+.
Note that the structure of the mineral, fluorite, affords very high physical constants as it is a very stable structure. Li2O is called antfluorite. Why?
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