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The order of stability of the following ...

The order of stability of the following carbocations is

A

Ill gt I gt II

B

Ill gt II gt I

C

II gt Ill gt I

D

I gt II gt III

Text Solution

Verified by Experts

The correct Answer is:
A
I. `CH_2 = CH - CH_(2)^(+) harr overset(+) CH_2 - CH = CH_2 `: Stabilised by resonance.
II. `CH_3 - CH_2 - CH_(2)^(+)` : Stabilised by hyperconjugation
III.

Greater the number of resonance structures greater is the stability. Hence correct order is : III > l > Il
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