Question

In which of the following compound(s) highest covalent character is found?

• A. $Ca{F}_2$
• B. $CaC{l}_2$
• C. $CaB{r}_2$
• D. $Ca{I}_3$

Answer 1

The correct option is D $Ca{I}_3$

In ${CaI}_3$ the size of the halogen molecule is greatest among ${CaF}_2,{CaCl}_2,{CaBr}_2$ and ${CaI}_3$. So, maximum polarisation is possible of the ionic bond, resulting in the formation of a polar covalent bond.

Ans $\to$ D) ${CaI}_3$