Final answer:
Functional groups define chemical reactivity in organic compounds such as alkyl halides and aryl halides, contributing to the immense variety of organic compounds.
Explanation:
Functional group: A functional group is a specific arrangement of atoms or bonds that imparts characteristic chemical reactivity to a molecule. Examples include alcohols, carboxylic acids, amines, etc.
Halocarbon: Organic compounds containing one or more halogen atoms like fluorine, chlorine, bromine, or iodine. Alkyl halides and aryl halides are examples of halocarbons.
Alkyl halide and Aryl halide: Alkyl halides are organic compounds where a halogen atom is attached to an alkyl group. Aryl halides contain a halogen atom attached to an aromatic ring.
The immense variety of organic compounds arises from the presence of different functional groups that determine their properties and reactivities, allowing for a wide range of unique chemical compounds to exist.
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