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Assertion (A) . Energy of resonance hybr...

Assertion (A) . Energy of resonance hybrid is equal to the average of energines of all canonical forms.
Reason (R). Resonance hybrid cannot be presented by a single structure.

A

Both A and R are correct and R is the correct explanation of A.

B

Both A and R are correct but R is not the correct explanation of A.

C

Both A and R are not correct.

D

A is not correct but R is correct.

Text Solution

Verified by Experts

The correct Answer is:
D
Correct A: The energy of the resonance hybrid is equal to sum of the energies of the various canonical structures in proportion of their contribution towards resonance hybrid.
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Knowledge Check

  • Assertion (A) : Energy of resonance hybrid is equal to the average of energies of all canonical forms. Reason (R) : Resonance hybrid cannot be represented by a single structure.

    A
    Both A and R are correct and R is the correct explanation of A.
    B
    Both A and R are correct but R is not the correct explanation of A.
    C
    Both A and R are not correct.
    D
    A is not correct but R is correct.

  • Assertion (A) : Energy of resonance hybrid is equal to the average of energies of all canonial forms. Reason (R) : Resonance hybrid cannot be presented by a single structure.

    A
    Both A and R are correct and R is the correct explanation of A.
    B
    Both A and R are correct but R is not the correct explanation of A.
    C
    Both A and R are not correct
    D
    A is not correct but R is correct

  • Benzene is a resonance hybrid of mainly two Kekule structures. Hence

    A
    Hlaf the molecules correspond to one structure and half to the second structure
    B
    At low temperature benzene can be separated into two structures
    C
    Two structures make equal contribution to resonance hybride
    D
    An individual benzene molecule changes back and forth between two structures

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    Benzene is a resonance hybride of mainly two kekule structures. Hence

    Aniline is resonance hybrid of ___ structures

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    Assertion : In series LCR resonance circuit, the impedance is equal to the ohmic resistance. Reason : At resonance, the inductive reactance exceeds the capacitive reactance.

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