Question

What is the net charge on Calcium fluoride?
A) 1+ B) 0 C) 1­- D) 2­-

Answer 1

Answer:

d 2

Explanation:

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C

a

F

2

 is conceived to be formed of 2 ions,  

C

a

2

+

, and  

F

−

. Clearly, there must be 2 negative ions to balance the 2 positive charges of the metal ion.

The mineral itself, fluorite, is prized for its optical properties, and exhibits very low solubility in water on the basis of its structure.