A) \[CaC{{l}_{2}}\]
B) \[Ca{{l}_{2}}\]
C) \[Ca{{F}_{2}}\]
D) \[CaB{{r}_{2}}\]
Correct Answer: C
Solution :
Since, the lattice energy of \[Ca{{F}_{2}}\] predominates over hydration energy. Therefore, it is insoluble in water.
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