Question
Chemistry Question on Chemical bonding and molecular structure
Based on lattice energy and other considerations which one of the following alkali metal chlorides is expected to have the highest melting point ?
A
RbCl
B
KCl
C
NaCl
D
LiCl
Answer
NaCl
Explanation
Solution
As we go down in the group, ionic character increases hence, melting point of halides should increase but NaCl has the highest melting point (800∘C) due to its high lattice energy.