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JEE Chemistry · Medium

General Organic Chemistry: Carbanion stability MCQ

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Carbanion stabilityMediumQuestion 730008

Question

Carbanion stability order is:
  1. A
    3° < 2° < 1° < CH₃⁻
    Correct
  2. B
    3° > 2° > 1°
  3. C
    All equal
  4. D
    1° > 2° > 3°

Correct answer

3° < 2° < 1° < CH₃⁻

Explanation

Electron-donating alkyl groups destabilise a negative charge on carbon. Stability therefore increases as substitution decreases: 3° < 2° < 1° < CH₃⁻.

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