Find the number of electron - donating groups in resonance among the following : {:("a) "-CONH_(2), "b) "-NO_(2), "c) "-OCOCH_(3), "d) "-COOCH_(3)), ("e) "-CHO, "f) "-NHCOCH_(3),"",""):}

Find the number of electron - donating groups in resonance among the f

1.	Find the number of electron - donating groups in resonance among the following : {:("a) "-CONH_(2), "b) "-NO_(2), "c) "-OCOCH_(3), "d) "-COOCH_(3)), ("e) "-CHO, "f) "-NHCOCH_(3),"",""):}
Answer» SOLUTION :`-OCOCH_3 - NHCOCH_3`