A) \[C>B>A\]
B) \[B>C>A\]
C) \[~C>A>B\]
D) \[~A>B>C\]
Correct Answer: D
Solution :
The order of homolytic bond dissociation energies of \[C{{H}_{4}},{{C}_{2}}{{H}_{6}}\]and \[C{{H}_{3}}Br\]is as \[\begin{align} & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{4}}>{{C}_{2}}{{H}_{6}}>C{{H}_{3}}Br \\ & \Delta \Eta (\text{kcal/mol)}\,\,\,\,\,\,\text{105}\,\,\,\,\,\,\,\,\,\text{100}\,\,\,\,\,\,\,\,\,\,\,\,\,\text{70} \\ \end{align}\]
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