The correct stability order for the following | vedclass

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Question

(D) The stability of carbocations is determined by resonance,hyperconjugation,and inductive effects.$(I)$ is a tertiary carbocation adjacent to an oxy

Vedclass · Accepted Answer

$(I) > (III) > (II) > (IV)$

Vedclass · Answer

(D) The stability of carbocations is determined by resonance,hyperconjugation,and inductive effects.$(I)$ is a tertiary carbocation adjacent to an oxygen atom. It is stabilized by resonance (lone pair donation from oxygen) and has $6$ $\alpha$-hydrogen atoms for hyperconjugation.$(III)$ is a secondary carbocation adjacent to an oxygen atom. It is stabilized by resonance,but has only $3$ $\alpha$-hydrogen atoms.$(II)$ is a secondary alkyl carbocation with $5$ $\alpha$-hydrogen atoms.$(IV)$ is a primary alkyl carbocation with $2$ $\alpha$-hydrogen atoms.Resonance stabilization by the oxygen atom is the most significant factor,making $(I)$ and $(III)$ more stable than $(II)$ and $(IV)$. Between $(I)$ and $(III)$,$(I)$ is more stable due to more hyperconjugation. Between $(II)$ and $(IV)$,$(II)$ is more stable due to more hyperconjugation.Therefore,the correct stability order is $(I) > (III) > (II) > (IV)$.

The correct stability order for the following species is:

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