Question

Which of the following has the highest lattice energy?

A) LiCl
B) CaF2
C) CaO
D) AIN​

Answer 1

Answer:

a) Licl

Explanation:

Li - lithium is more e- positive and

cl- Chlorine is more e- negative

both form a good Cristaline solid

Answer 2

The compound which has the highest lattice energy is D) AIN.

• Lattice energy is the energy produced by breaking one mole of a compound into its constituent ions.
• Lattice energy is directly proportional to the charge of cation and anion and inversely proportional to the size of cation and anion.
• In the above options, AlN has a maximum valence of 3 and is the small cation from the calcium but larger than LiCl. but chloride ion decreases the lattice energy much in LiCl due to its large size.
• Also, LiCl has a valence of 1.