Question

Which are the factors that contribute to lattice energy of an ionic compounds?

• A. charge on the ion and size of the ion
• B. packing of ions only
• C. size of the ion only
• D. charge on the ion only

Answer 1

The correct option is A

charge on the ion and size of the ion

Explanation for correct option:

Option(A): charge on the ion and size of the ion

• Measuring the strength of bonds in an ionic compound gives us the measure of Lattice energy.
• More is the measure of charge, more is the lattice energy.
• With the increase of the size, lattice energy decreases.

Explanation for incorrect option:

Option(B): packing of ions only

• Lattice energy depends on charge as well as size of an ion.
• It is not a measure of packing of ions.

Option(C): size of the ion only

• Lattice energy depends on charge on ion along with its size.
• It increases with an increase in the charge.

Option(D): charge on the ion only.

• Lattice energy depends on size of the ion along with the charge.
• It decreases with an increase in the charge.

Therefore the correct option is Option(A): charge on the ion and size of the ion.