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Which of the following carbocations will...

Which of the following carbocations will be the most stable?

A

`Ph_(3)overset(+)C`

B

`CH_(3)-overset(+)CH_(2)`

C

`(CH_(3))_(2)-overset(+)CH`

D

`CH_(2)=CH-overset(+)CH_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
The decreasing order of stability is
`Ph_(3)overset(+)C gt CH_(2)=CH-overset(+)CH_(2) gt (CH_(3))_(2)-overset(+)CH gt CH_(3)-overset(+)CH_(2)`
`Ph_(3)overset(C)` is the most stable because its positive charge is the most effectively dispersed on three benzene rings through resonance effect:
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