Question

Which is more covalent among CaCl2 and ZnCl2 and why?

Answer 1

$ZnCl_2$ is more covalent than the $CaCl_2.$.

Explanation:

• In $ZnCl_2$, the cation $Zn_2^+$ is quiet smaller when compared to the anion $Cl^-$ and this anion is much larger.

• But in the $CaCl_2$, the cation $Ca2^+$ is much larger when compared to the anion$Cl^-$.

• According to the Fajan’s Rule, the compound which is having the smaller cation and larger anion is much more covalent in nature than the compound having larger cation and smaller anion.

• And the other thing is Zinc, Zn, is a d-block element have much more covalency then the Calcium, Ca, which is a s-block element.

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