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Presence of a nitro group in a benzene ring (a) deactivates the ring towards electrophilic substitution (b) activates the ring towards electrophilic substitution (c) renders the ring basic (d) deactivates the ring towards nucleophilic substitution. ?

Presence of a nitro group in a benzene ring
(a) deactivates the ring towards electrophilic substitution
(b) activates the ring towards electrophilic substitution
(c) renders the ring basic
(d) deactivates the ring towards nucleophilic substitution.
?

Grade:12

2 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
Nitro group is electron withdrawing group. It withdraws electron from benzene rings towards itself such that the pi electrons of benzene are transferred to the nitro group this deactivate the benzene ring towards electrophilic substitution reaction.
Vikas TU
14149 Points
3 years ago
Presence of a nitro group in a benzene ring. From the resonating structures of nitrobenzene, it can be seen that the nitro-group withdraws electrons from the ring and hence it deactivates the benzene ring for further electrophilic substitution. The correct option is D.

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