A) \[CaB{{r}_{2}}\]
B) \[Ca{{I}_{2}}\]
C) \[Ca{{F}_{2}}\]
D) \[CaC{{l}_{2}}\]
Correct Answer: B
Solution :
As covalent character increases, melting point decreases, thus order of melting point is \[Ca{{F}_{2}}>CaC{{l}_{2}}>CaB{{r}_{2}}>Ca{{I}_{2}}\]
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