Based on lattice energy

Question:

Based on lattice energy and other considerations, which one of the following alkali metal chloride is expected to have the highest melting point ?

1. $\mathrm{RbCl}$

2. $\mathrm{LiCl}$

3. $\mathrm{KCl}$

4. $\mathrm{NaCl}$

Correct Option: , 4

Solution: