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halogen

[C/U] Both
pl: halogens

This term describes a specific chemical personality characterized by extreme reactivity. Halogens are the most aggressive non-metals, constantly seeking to acquire an electron to achieve stability. This creates a sense of chemical volatility and potency in a laboratory setting. In common parlance, the word is frequently associated with lighting technology. Halogen lamps use a halogen cycle to prevent the filament from evaporating, which allows the bulb to operate at higher temperatures and produce a brighter, whiter light than standard incandescent bulbs.

Countable when referring to a specific chemical element from the group (e.g., fluorine is a halogen). Uncountable when referring to the chemical property or the gas used in lighting.

Meanings

Noun

A group of elements in the periodic table including fluorine, chlorine, bromine, iodine, and astatine.

"The chemist analyzed the reaction of the halogen with the metal."

Related Words

Last Updated: May 31, 2026Report an Error