Question

Resonance effect is NOT observed in ______. 

विकल्प

• \[\ce{CH2 = CH - Cl}\]

• \[\ce{CH2 = CH - CH2 - NH2}\]

• \[\ce{CH2 = CH - CH = CH2}\]

• \[\ce{CH2 = CH - C = N}\]

Answer 1

The resonance effect is NOT observed in \[\ce{CH2 = CH - CH2 - NH2}\]

Explanation:

In a conjugated system of π electrons, resonance is seen. The lone pair on the "N" atom in option (B) is not conjugated to the carbon-carbon π bond. As a result, the structure specified in the option does not exhibit a resonance effect (B).