JEE Main Chemistry question

Chemistry Organic Chemistry - Some Basic Principles and Techniques JEE Main

Correct order of carbanion stability is

(A)HC≡C⁻ > CH₂=CH⁻ > CH₃–CH₂⁻Correct
(B)CH₃–CH₂⁻ > CH₂=CH⁻ > HC≡C⁻
(C)CH₃–CH₂⁻ > HC≡C⁻ ≈ CH₂=CH⁻
(D)All equally stable

Answer: (A)

Solution

Greater s-character stabilizes carbanions: sp (acetylide) > sp² (vinyl) > sp³ (ethyl).

Question ID VK-139408