Arrange the following alkyl halides in o...

Arrange the following alkyl halides in order of dehydrohalgenation, `C_2H_5I` , C_2H_5Cl` , C_2H_5Br` , C_2H_5F`

A

`C_2H_5F gt C_2H_5Cl gt C_2H_5Br gt C_2H_5I`

B

`C_2H_5I gt C_2H_5Br gt C_2H_5Cl gt C_2H_5F`

C

`C_2H_5I gt C_2H_5Cl gt C_2H_5Br gt C_2H_5F`

D

`C_2H_5F gt C_2H_5I gt C_2H_5Br gt C_2H_5Cl`

Verified by Experts

The correct Answer is:

B

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