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Which of the following is the least stab...

Which of the following is the least stable ?

A

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

B

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

C

`CH_(3)-underset(CH_(3))underset(|)overset(+)C-CH_(3)`

D

`CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-overset(+)CH-C_(6)H_(5)`

Text Solution

Verified by Experts

The correct Answer is:
A
The order of stability of carbocation is
`"benzyl" gt 3^(@) gt 2^(@) gt 1^(@)`
Thus, `CH_(3)CH_(2)overset(+)CH_(2)` being `1^(@)` cation is the least stable.
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