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Reactivity order of halides of dehydroha...

Reactivity order of halides of dehydrohalogenation is

A

R − F `gt` R − Cl `gt` R − Br `gt` R − I

B

R − I `gt` R − Br `gt` R − Cl `gt` R − F

C

R − I `gt` R − Cl `gt` R − Br `gt` R − F

D

R − F `gt` R − I `gt` R − Br `gt` R − Cl

Text Solution

Verified by Experts

The correct Answer is:
B
As the size of halide ion increases the R - X bond strength decreases and the halide ion will be a good leaving group. Thus, the reactivity order is
`R-I gt R-Br gt R-Cl gt R-F`
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