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JEE Chemistry · Medium

General Organic Chemistry: Mesomeric effect MCQ

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Mesomeric effectMediumQuestion 730006

Question

The −NH₂ group shows +M effect because:
  1. A
    Lone pair on N delocalises into the ring/pi system
    Correct
  2. B
    N is electronegative
  3. C
    N withdraws electrons inductively
  4. D
    N forms hydrogen bonds

Correct answer

Lone pair on N delocalises into the ring/pi system

Explanation

+M effect: lone pair of electrons on N is donated into the adjacent pi system via resonance. This increases electron density in the ring and makes −NH₂ an ortho-para director and ring activator.

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