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Question: Answered & Verified by Expert
Assertion : Energy of resonance hybrid is equal to the average of energies of all canonical forms.
Reason : Resonance hybrid cannot be presented by a single structure.
ChemistryGeneral Organic Chemistry
Options:
  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • B
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is correct but Reason is incorrect.
  • D
    If the Assertion is incorrect but the Reason is correct.
Solution:
2035 Upvotes Verified Answer
The correct answer is:
If the Assertion is incorrect but the Reason is correct.
Canonical structures always have more energy than resonance hybrid. Resonance hybrids are always more stable than any of the canonical structures. The delocalisation of electron lowers the orbital energy and gives stability.

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