Question

lattice energy comperision AlN and AL2O3

Answer 1

Answer:

Explanation:

charge is dominating factor

if you see charge of anions

n -3 and o3 -2

which has more charge(consider magnitude) obviously -3 right

Answer 2

Answer:

AlN

Explanation:

• To check the lattice energy of the compound we should know the general trend (i.e) lattice energy is directly proportional to the charge of the species and inversely proportional to the size of the species.

• In both AlN and Al₂O₃ the cation is same so we should not consider the cation.
• If we consider the anion, N has a charge of -3 and O has a charge of -2 and also O is smaller in size compare to N.
• Here we have to note that, Charge is a dominating factor compared to size of the species.
• Therefore we should consider the Charge of the anion here, Thereby AlN has more lattice energy.