Allylic halides have the halogen atom bonded to an sp³-hybridized carbon atom adjacent to a carbon-carbon double bond (C=C). The distinguishing feature is the location of the halogen atom in proximity to the double bond.

Alkyl halides are classified as primary, secondary, or tertiary based on the nature of the carbon atom to which the halogen is attached. The terms used for these classifications are 1° alkyl halide (primary), 2° alkyl halide (secondary), and 3° ...

The deficiency of thyroxine causes a disease called goiter, which is characterized by the enlargement of the thyroid gland in the neck.

Haloalkanes have halogen atoms attached to the sp³ hybridized carbon atom of an alkyl group, while haloarenes have halogen atoms attached to sp² hybridized carbon atom(s) of an aryl group.

Chloramphenicol is a chlorine-containing antibiotic produced by microorganisms and is effective for the treatment of typhoid fever.