Question

Which of the following bond is the strongest?

Options

• F – F

• CI – CI

• I – I

• Br – Br

Answer 1

CI – CI

Explanation:

Although the (F – F) bond is expected to be the strongest, it cleaves more easily than the CI – CI bond due to lean pair repulsion. The CI – Cl bond is the strongest because it has the shortest bond length of any halogen group.