Question

Acidity of diprotic acid in aqueous solution increases in order.

Options

• H₂S < H₂Se < H₂Te

• H₂Se < H₂S < H₂Te

• H₂Te < H₂S < H₂Se

• H₂Se < H₂Te < H₂S

Answer 1

H₂S < H₂Se < H₂Te

Explanation:

Because bond dissociation enthalpy decreases as atomic size increases.