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Resonance Effect

A molecule ma...

Question

A molecule may be represented by three structures having energies $E_{1}, E_{2}$ and $E_{3}$ , repectively. The energies of these structure follow the order $E_{3} < E_{2} < E_{1}$ repectively. If the experimental bond energy of the molecule is $E_{0}$ , the resonance energy is:

A

(E_{1} + E_{2} + E_{3}) - E_{0}

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B

E_{o} - E_{3}

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C

E_{3} - E_{1}

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D

E_{0} - E_{2}

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Solution

The correct option is B $E_{o} - E_{3}$
Resonance hybrid is the average or hybrid of these resonance structures.
Resonance energy = $E_{o} -$ smallest energy of lewis structure
= $E_{o} - E_{3}$
Option B is correct.

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