Is there any difference in the resonance effect of `-NH_2` group and `-NO_2` group on benzen ring? Justify it.

Give the resonating structures of NO_2 and N_2 O_5

Write the resonance structures of SO_3, NO_2 and NO_3^-

Presence of a nitro group in a benzene ring

Phenol exhibit resonance. Predict the directive influence of -OH group in Benzene ring.

Predict the directive influence of -OH group in Benzene ring

Assertion : Bromination of phenol takes place even in the absence of Lewis acid. Reason : In phenol, OH group attached to benzene ring has highly deactivating effect.