Statement - I : The bond dissociation energy of fluorine is less than bromine.
Statement - II : In fluorine molecule, large lone pair electronic repulsions and appreciable internuclear repulsions are present.

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Both statements I and II are correct

Statement-I is incorrect and statement-II is correct

Both statements I and II are incorrect

Statement-I is correct and statement-II is incorrect

answer is A.

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Detailed Solution

Bond lengths of halogens are in the order : F₂ < Cl₂ < Br₂ < I₂.
Bond energies are expected in the order : F₂ > Cl₂ > Br₂> Cl₂.
But the experimental bond enthalpies are : Cl₂ > Br₂ > F₂ > I₂.
Bond enthalpy of F2 is very less, because lone pair - lone pair repulsions are appreciable in F₂as the bond length is small in F₂.
It was also thought, though not appropriate, that F–F bond is weak as multiple bond is not possible with no d-orbitals in the valence shell of fluorine.