Question

Assertion : Bond dissociation energy is F₂ > Cl₂.

Reason : Cl₂ has more electronic repulsion than F₂.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

The correct option is (d) A and R are false.

Explanation:

Bond dissociation energy is F₂ < Cl₂ because of relatively large electron-electron repulsion among the lone pairs in F₂ molecule where they are much closer to each other than in Cl₂.