Which of the following compounds will not exist as resonance hybrid. Give reason for your answer:
(i) CH_{3} OH
(ii) R-CONH_{2}
(iii) CH_{3}CH = CHCH_{2}NH_{2}

Answers (1)

(i) CH_{3} OH: It does not show resonance because there are no electrons.

(ii) R-CONH_{2} : It shows resonance due to the presence of lone pair of electrons on N atom and electrons on C = O bond. Hence it can be represented by three resonating structures.

(iii) CH_{3}CH = CHCH_{2}NH_{2} : Lone pair of electrons on N atom, is not conjugated with the \pi electrons of double bond, so no resonance.

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