A) R-F>R-Cl>R-Br>R-I
B) R-I>R-Br>R-Cl>R-F
C) R-I>R-F>R-Br>R-Cl
D) R-F>R-I>R-Br>R-Cl
Correct Answer: B
Solution :
The order of bond dissociation energy : \[R-F>R-Cl>R-Br>R-l\]. During dehydrohalogenation C - l bond breaks more easily than C - F bond. So reactivity order of halides: \[R\text{ }\text{ }l\text{ }>\text{ }R\text{ }\text{ }Br\text{ }>\text{ }R\text{ }\text{ }Cl\text{ }>\text{ }R\text{ }-\text{ }F\].You need to login to perform this action.
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