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The stability of carbocations underset...

The stability of carbocations
`underset(I)underset()((CH_(3))_(3)C^(oplus))" "underset(II)underset()((CH_(3))_(2)overset(oplus)C(OCH_(3)))" "underset(III)underset()(CH_(3)CH_(2)CH_(2)overset(oplus)CH_(2))" "underset(IV)underset()(CH_(3)overset(oplus)CHCH_(2)CH_(3))`
follows the order

A

`IIIltIVltIIltI`

B

`IIIltIVltIIltI`

C

` IVltIIIltIIltI`

D

`IVltIIIltIltII`

Text Solution

Verified by Experts

The correct Answer is:
B
(II) is most stable due to resonance then `3^(@)gt2^(@)gt1^(@)` carbocation
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Arrange the following free radicals in order of stability underset(I)underset()((CH_(3))_(3)overset(cdot)C)" "underset(II)underset()((CH_(3))_(2)overset(cdot)CH)" "underset(III)underset()(CH_(3)overset(cdot)CH_(2))" "underset(IV)underset()(overset(cdot)CH_(3))

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