In which of the following molecules, the substituent does not exert its resonance effect

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In which of the following molecules, the substituent does not exert its resonance effect

ChemistryGeneral Organic ChemistryNEET

Options:

A $C_{6} H_{5} {NH}_{2}$
B $C_{6} H_{5} {NH}_{3}^{\oplus}$
C $C_{6} H_{5} OH$
D $C_{6} H_{5} Cl$

Solution:

2912 Upvotes Verified Answer

The correct answer is:

C_{6} H_{5} {NH}_{3}^{\oplus}

In

C_{6} H_{5} {NH}_{3}^{\oplus}

there is no lone pair electrons on the N-atom and hence it cannot exert its resonance effect.

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