MHT CET 2024 Chemistry question

Which of the following groups exhibits (+) R effect?

(1)–NHRCorrect
(2)–CN
(3)–NO
(4)-COOR

Answer: (1)

Solution

A group shows a +R (+M) effect when it has a lone pair of electrons on the atom attached to the conjugated system that can be donated into the system. In the nitrogen has a lone pair, which is pushed into the ring or double bond, so it

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Question ID VK-095626