Q.

Find the number of electron – donating groups in resonance among the following :

a) CONH2 b) NO2 c) OCOCH3 d) –COOCH3    e) –CHO    f) –NHCOCH3

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answer is 2.

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Detailed Solution

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These are connected to benzene ring O and N will donate lone pair,– OCOCH3. – NHCOCH3

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