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Question 730005
JEE Chemistry · Medium

General Organic Chemistry: Resonance MCQ

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ResonanceMediumQuestion 730005

Question

The resonance structures of benzene are equivalent because:
  1. A
    Delocalized pi electrons make all C−C bonds equal
    Correct
  2. B
    All bonds are single bonds
  3. C
    All bonds are double bonds
  4. D
    Resonance structures interconvert rapidly

Correct answer

Delocalized pi electrons make all C−C bonds equal

Explanation

Benzene has 6 delocalized pi electrons over the ring, making all C−C bond lengths equal (1.40 Å, intermediate between single 1.54 Å and double 1.34 Å). Resonance is not physical switching between structures.

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