Question

Resonance energy per benzene ring is maximum for:

• A. benzene
• B. naphthalene
• C. phenanthrene
• D. anthracene

Answer 1

The correct option is A benzene

Resonance energy per benzene ring is maximum for benzene.

Order of stability :

Benzene > phenanthrene $\sim$ Napthalene >anthracene.

The resonance energy per benzene ring decreases from benzene $\to$ napthalene $\to$ phenanthrene $\to$ anthracene