CuCl is more covalent than NaCl. Give reason.

Explanation

(i) Cation having `ns^(2)np^(6)nd^(10)` configuration show greter polarsing power than the cations with `ns^(2)np^(6)` configuration. Hence they show greater covalent character.
(ii) CuCl is more covalent than NaCl. As compared to `Na^(+) (1.13A), Cu^(+) (0.6A)` is small and has `3s^(2)3p^(6)3d^(10)` configuration.
(iii) Electronic configuration of `Cu^(+)` : `[Ar]2d^(10)`
Electroic contiguratton of `Na^(+)` : `[He] 2s^(2)2p^(6)`
So CuCl is more covalent than NaCl