Question

Give reasons for the following :
(i) `MgCl_(2)` is more covalent than NaCl (ii) CuCl is more covalent than NaCl.

Answer 1

(i) Due to higher charge , `Mg^(2)` is more polarising than `Na^(+)` and hence `MgCl_(2)` is more covalent than NaCl.
(ii) Due to pseudo inert gas configuration , `Cu^(+)` is more polarising than `Na^(+)` and hence CuCl is more covalent than NaCl .