NEET 2024 · ChemistryPrevious Year Question
The most stable carbocation among the following is:
Answer: (C) (C). \textbf{Answer:} (c) \textbf{Solution:} Carbocation stability increases with the degree of substitution and with the number of -hydrogens available for hyperconjugation.
- A.(A)
- B.(B)
- C.(C)✓
- D.(D)
Correct Answer
(C) (C)
Solution & Explanation
\textbf{Answer:} (c) \textbf{Solution:} Carbocation stability increases with the degree of substitution and with the number of -hydrogens available for hyperconjugation. Structure (C) is a tertiary 1-methylcyclohexyl cation: the positively charged carbon bears a methyl group and two ring groups, giving the maximum hyperconjugation plus from three alkyl groups. The other three are primary or secondary cations and are far less stabilised.
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