Q. The correct order of increasing stabilities for the following carbocations is
( 1) allyl carbocation
(2 ) neopentyl carbocation
(3) benzyl carbocation
(4) isobutyl carbocation

 1470  160 Organic Chemistry – Some Basic Principles and Techniques Report Error

Solution:

Allyl carbocation (stabilised by resonance)

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Benzyl and allyl carbocations are much more stable due to resonance.

Hence, the stability order is

Neopentyl carbocation isobutyl carbocation allyl carbocation benzyl carbocation.