Aryl halides are termed Haloarenes in IUPAC nomenclature system. The prefix ‘halo” (bromo or chloro or iodo or fluoro) is placed before the name of the aromatic hydrocarbon. In case of disubstituted compounds, the relative positions are indicated by (1,2), (1,3) or (1,4). Ortho, meta and para are also used to indicate the positions (e.g, chlorobenzene,bromobenzene).
Figure 1: Structure of 1-Chlorobenzene