bromio

Bromio is a term used in some languages to refer to bromine, the chemical element with atomic number 35 and symbol Br. The name bromine itself is derived from the Greek brómos, meaning “stench,” a reference to its pungent odor. In English-language science writing the element is usually called bromine, while bromide is used for its negative ion in compounds.

Bromine is a halogen. It exists as a reddish-brown liquid at room temperature that rapidly vaporizes to a fuming red-brown gas. In its elemental form it is diatomic (Br2) and highly reactive, capable of oxidizing many organic and inorganic substances. In nature it is not found free but occurs in minerals and, mainly, in seawater and brines as bromide salts. Commercial production involves extracting bromide from brine and converting it to elemental bromine by oxidation, followed by distillation.

Uses of bromine and its compounds include flame retardants, water-disinfection products, and reagents for organic synthesis (for example brominating agents and pharmaceuticals). Bromine compounds are important in several industrial processes but are also hazardous; exposure can irritate the skin, eyes, and respiratory tract, and handling requires appropriate safety measures.

Notes: The term bromio may appear historically or regionally in references to bromine in non-English texts, reflecting localization rather than a distinct chemical meaning. See also bromide, bromination, and halogens.