Which of the following has highest bond dissociation energy ?

Options

A. `F_(2)`
B. `Cl_(2)`
C. `I_(2)`
D. `Br_(2)`

Answer

B

Explanation

Bond strngth `a (1)/(n_(1) + n_(2))` where `n_(1)` and `n_(2)` are principle quantum nos of overlapping atomic orbitals. In `F_(2)` interelectronic repulsion occurs.