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In electrophilic aromatic substitution r...

In electrophilic aromatic substitution reaction, the nitro group is meta directing because it

A

Decreases electron density at meta position

B

Increases electron density at meta position

C

Increases electron density at ortho and para position

D

Decreases electron density at ortho and para positions

Text Solution

Verified by Experts

The correct Answer is:
D
The directive influence of `-NO_(2)` as an electrophile in electrophilic aromatic substitution is due to the – I effect or electron withdrawing effect of , `-NO_(2)` and can be explained on the basis of the resonating structures obtained by the attack of the group on the benzene ring

The substituent, i.e., `-NO_(2)` withdraws electrons from o- and p-positions. Thus, m-position becomes a point of relatively high electron density and further substitution by electrophile occurs at m-position.
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