hypohalogen
Hypohalogens are a class of chemical compounds that contain a halogen atom in the -1 oxidation state. This is a rare oxidation state for halogens, which typically exist in the -1 or 0 oxidation states. Hypohalogens are highly reactive and are often used as oxidizing agents in various chemical reactions. The most common hypohalogens are hypochlorous acid (HClO), hypobromous acid (HBrO), and hypoiodous acid (HIO). These compounds are typically prepared by the reaction of a halogen with a reducing agent, such as a metal or a metal oxide. Hypohalogens are used in a variety of applications, including water treatment, bleaching, and disinfection. They are also used in the synthesis of other chemicals, such as pharmaceuticals and dyes. However, due to their high reactivity, hypohalogens must be handled with care to avoid accidents.