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QUESTION

# What is the formula of calcium fluoride?

The formula for calcium fluoride is CaF_2

Calcium is an Alkaline Earth Metal in the second column of . This means that calcium has 2 it readily gives away in order to seek the stability of the octet. This makes calcium a Ca^(+2) cation.

Fluorine is a Halogen in the 17th column or p^5 group. Fluorine has 7 . It needs one electron to make it stable at 8 electrons in its valence shells. This makes fluorine a F^(−1 ) anion.

Ionic bonds form when the charges between the metal cation and non-metal anion are equal and opposite. This means that two F^(−1) anions will balance with one Ca^+2 cation.

This makes the formula for calcium chloride, CaF_2.

I hope this is helpful. SMARTERTEACHER