Give reason for the following: (a) LiCl is more covalent than KCl. (b)

1.	Give reason for the following: (a) LiCl is more covalent than KCl. (b) LiF has lower melting point than NaCl. (c) CuCl is more covalent than NaCl.
Answer» (a) Due to smaller size and high poalrising power of Li+ ion ,LiCl is more covalent than KCl. (b) Small cation Li+ ion highly polarizes large anion I^-, LiI is more covalent and hence has lower melting point. (c) Due to pseudo inert gas configuration, Cu⁺ is more polarizing than Na⁺ and hence CuCl is more Covalent NaCl.

Give reason for the following: (a) LiCl is more covalent than KCl. (b) LiF has lower melting point than NaCl. (c) CuCl is more covalent than NaCl.

Answer»

(a) Due to smaller size and high poalrising power of Li+ ion ,LiCl is more covalent than KCl.

(b) Small cation Li+ ion highly polarizes large anion I^-, LiI is more covalent and hence has lower melting point.