Alkyl or aryl halides are organic compounds that contain a halogen atom, such as fluorine, chlorine, bromine, or iodine, bonded to an alkyl or aryl group. Alkyl groups are derived from alkanes, while aryl groups come from aromatic compounds like benzene. These halides are important in organic chemistry and are used in various applications, including solvents and intermediates in chemical synthesis. The presence of the halogen atom in alkyl or aryl halides significantly affects their chemical properties, such as reactivity and polarity. These compounds can undergo reactions like nucleophilic substitution and elimination, making them valuable in the production of pharmaceuticals, agrochemicals, and other industrial chemicals.