A) \[~C{{l}_{2}}>{{I}_{2}}>B{{r}_{2}}\]
B) \[{{I}_{2}}>B{{r}_{2}}>C{{l}_{2}}\]
C) \[{{I}_{2}}=C{{l}_{2}}=B{{r}_{2}}\]
D) \[C{{l}_{2}}>B{{r}_{2}}>{{I}_{2}}\]
Correct Answer: D
Solution :
The bond dissociation energy of \[C{{l}_{2}},B{{r}_{2}}\]and \[{{I}_{2}}\]is as: \[\begin{align} & \text{Molecule:}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{l}_{2}}\,\,\,\,\,>\,\,\,\,B{{r}_{2}}\,\,\,\,\,\,>\,\,{{I}_{2}} \\ & \text{Disscociation:}\,\,\,\,\,242.6\,\,\,\,\,\,\,192.8\,\,\,\,\,\,\,151.1 \\ & \text{enthalpy}\,(kJ\,mo{{l}^{-1}}) \\ \end{align}\]
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