Chapter 20.2, Problem 4RQ

Interpretation Introduction

Interpretation: The common feature of aromatic compound is to be written.

Concept Introduction:The cyclic carbon compounds which abide to n-Huckel rule are called aromatic compounds.

Answer to Problem 4RQ

The common feature of all aromatic compounds is their characteristic pleasant aroma and their system of resonating pi electrons which are delocalized.

Explanation of Solution

The planar cyclic compounds which have a system of 4n-2 pi electrons which are delocalized and form a resonance system are called aromatic compounds. The characteristic aroma of these compounds is due to the electron system which gives the compound its properties.