Q. Illustrate Aromatics compounds?

Ans.

Benzene (C₆H₆) is the prototype of an important class of hydrocarbons called aromatic compounds. Benzene is a ring of 6 carbon atoms with bonds between the carbons which are somewhat like alternating double bonds. These double bonds resonate. This means they alternate back and forth between the carbons.

Benzene's structural formula can also be represented by a ring with a circle inside:

An example of an aromatic compound is naphthalene. It is a crystalline white solid of low vapor pressure. It is a constituent of mothballs.

Substituting one of benzene's hydrogens with an alcohol functional group (i.e., with an -OH group) creates the compound phenol.