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Resonance Effect

Mesomeric eff...

Question

Mesomeric effect involves delocalisation of:

A

π

electrons

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B

σ

electrons

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C

Protons

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D

None of these

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Solution

The correct option is A $π$ electrons
The withdrawal effect or releasing effect of electrons of a particular substituent through the delocalization of π or pi-electrons that can be seen by drawing various canonical structures is called as mesomeric effect.
Mesomeric effect involves delocalisation of $π$ electrons.
Hence option A is correct.

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