Chapter 17, Problem 17.10P

Interpretation Introduction

Interpretation: The validation of the fact that $\left[\text{16}\right]\text{, }\left[\text{20}\right]$ or $\left[22\right]$ -annulene be aromatic if each ring is planar is to be stated.

Concept introduction: Aromatic compound should contain $\left(\text{4n+2}\right)\text{π}$ electrons and should be planar. Antiaromatic compounds should contain $\left(\text{4n}\right)\text{π}$ electrons.