Which among the following molecules has lowest bond dissociation enthalpy?

Which among the following molecules has lowest bond dissociation enthalpy?
  1. $\mathrm{F}_2$
  2. $\mathrm{Br}_2$
  3. $\mathrm{Cl}_2$
  4. $\mathrm{I}_2$

Solution

$\mathrm{I}_2$ has the least bond dissociation energy due to its largest size.

Asked in: MHT CET 2022 (06 Aug Shift 2)

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