A)
B)
C)
D)
Correct Answer: C
Solution :
Primary allyl carbocation is stabilised only by resonance effect whereas secondary and tertiary allyl carbocations are stabilised by resonance, hyperconjugation and inductive effect. \[\therefore \] The stability of carbocations in decreasing order is \[{{3}^{o}}\] allyl carbocation \[>{{2}^{o}}\] allyl carbocation \[>{{1}^{o}}\] allyl carbocation.
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