JEE · NEET Previous Year Question
Which of the following is not explained by hyperconjugation?
Topic: JEE PYQ
Answer: A. Full step-by-step solution below.
- AStability order of carbanions
- BStability order of free radicals
- CStability order of carbocations
- DStability of alkenes
Correct answer: A
Solution
(a) Hyperconjugation is the delocalisation of electron with adjacent -orbital.It helps in explaining stability order of free radicals, carbocations, alkanes but cannot explain stability of carbanion due to absence of vacant or -orbitals.
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