Option A lithium chloride
Explanation:-
As for LiCl, it is an ionic compound with high degree of covalent character due to the polarising power of the Li+ (high charge-to-size rati...
For highly ionic compound such as the NaCl, KCl and RbCl, lattice energy is directly proportional to melting point. Since lattice energy is proportional to charge-to-size ratio, Na...