NTA Abhyas JEE Main2020ChemistryGeneral Organic ChemistryPractice

Arrange the following carbocations in order of stability benzyl allyl methyl vinyl I II III IV

Options

AIV > III > II > I
BI > II > III > IV
CII > IV > III > I
DIII > II > I > IV

Correct answer

B. I > II > III > IV

Step-by-step solution

menthyl ( CH 3 ⊕ ) , vinyl (CH 2   =   CH + ) . Among the given options benzyl is highly stabilised by resonance and so is allylic but lesser than benzyl. Vinylic has a sp 2 carbocation which is unstable in nature.

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