Question

Which one of the following molecule shows Resonance ?

• A.
• B.
• C.
• D. All of the above.

Answer 1

The correct option is D All of the above.

In option (a), the lone pair of $O$ atom of $OH$ group is in conjugation with the $C=O$ double bond. Therefore, it will show resonance.

In option (b), the lone pair of $N$ atom is in conjugation with the $C=O$ double bond. Therefore, it will show resonance.

In option (c), the lone pair of $O$ atom of $OH$ group is in conjugation with the $C=C$ double bond. Therefore, it will show resonance.

Hence all the molecules will show resonance.