Question

The value of lattice energy is affected by

• A. Mass of ions
• B. Charge of ions only
• C. Size and charge of ions
• D. Size of ions only

Answer 1

The correct option is C Size and charge of ions

The energy generated when one mole of crystalline solid is formed by the combination of oppositely charged ions is known as lattice energy.

• As the magnitude of an ion’s charge increases, the force of interionic attraction increases, and the value of Lattice energy increases.
• The smaller the ions, the shorter the antinuclear distance and consequently the higher the Lattice energy.