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Question

Chemistry Question on Chemical bonding and molecular structure

Which compound is highest covalent?

A

LiCI

B

LiF

C

LiBr

D

Lil

Answer

Lil

Explanation

Solution

The magnitude of polarised or increased covalent character depends upon a number of factors. These factors are 1. Small size of cation : Smallest size of cation greater is its covalent character. 2. Large size of anion : Larger the size of anion greater is its covalent character. 3. Large charge on either of the two ions : As the charge on the ion increases, the covalent character increases. Hence, In LilLil, due to larger size I,LiII ^{-}, LiI is more covalent.