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Arrange the following carbocations in increasing order of stability: Methyl cation (I), Primary ethyReaction Mechanism Chemistry Question

Question

Arrange the following carbocations in increasing order of stability: Methyl cation (I), Primary ethyl cation (II), Secondary isopropyl cation (III), Tertiary butyl cation (IV).

Answer: A

💡 Solution & Explanation

Alkyl carbocations are stabilized by both $+I$ inductive effects and hyperconjugation ($\alpha$ -hydrogens). The tertiary butyl cation has 9 $\alpha$ -hydrogens, making it the most stable.

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