Aromatic hydrocarbons are a class of hydrocarbons known for their stable ring-like molecular structure and distinctive aroma. The most common example is benzene, which consists of a six-carbon ring with alternating double bonds and a delocalized pi electron system. This configuration grants them unique chemical properties like enhanced stability and reactivity. Aromatic hydrocarbons are extensively used in chemical synthesis and are found in many solvents, dyes, and pharmaceuticals.