halogenous /ha loj"euh neuhs/, adj.
/hal"euh jeuhn, -jen', hay"leuh-/, n. Chem.
any of the electronegative elements, fluorine, chlorine, iodine, bromine, and astatine, that form binary salts by direct union with metals.
[1835-45; HALO- + -GEN]

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Any of five nonmetallic elements
with similar chemical properties.

They occur in the second rightmost column of the periodic table as usually arranged. All are highly reactive oxidizing agents (see oxidation-reduction) with valence 1 (for fluorine, the only valence). They combine readily with most metals and nonmetals to form a variety of compounds and never occur uncombined in nature. A radioactive element, astatine occurs naturally in minute amounts as an intermediate decay product; it has no stable nonradioactive isotopes. Halogen salts formed with metal atoms (halides) are very stable; sodium chloride is the most familiar. The halogen lamp takes its name from the halogens included in the gas within its tungsten-filament bulb, added to prolong filament life and increase brightness.

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Universalium. 2010.

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  • halogen — HALOGÉN, Ă, halogeni, e, s.m., adj. 1. s.m. Nume generic pentru elementele fluor, clor, brom, iod şi astatiniu, care se pot combina direct cu metalele, dând săruri. 2. adj. Care dă naştere la săruri. – Din fr. halogène. Trimis de gall, 13.09.2007 …   Dicționar Român

  • halogen — ► NOUN 1) Chemistry any of the group of reactive, non metallic elements fluorine, chlorine, bromine, iodine, and astatine. 2) (before another noun ) using a filament surrounded by halogen vapour: a halogen bulb. ORIGIN from Greek hals salt …   English terms dictionary

  • Halogen — Hal o*gen (h[a^]l [ o]*j[e^]n), n. [Gr. a ls, alo s, salt + gen: cf. F. halog[ e]ne.] (Chem.) An electro negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, fluorine, bromine, and iodine;… …   The Collaborative International Dictionary of English

  • halogen — (n.) general name for elements of the chlorine family, 1842, from Swedish, coined by Swedish chemist Baron Jöns Jakob Berzelius (1779 1848), lit. salt producer, from Gk. hals salt (see HALO (Cf. halo )) + gen giving birth to (see GEN (Cf. gen));… …   Etymology dictionary

  • Halogen — ↑ Salz …   Das Herkunftswörterbuch

  • halogen — {{/stl 13}}{{stl 8}}rz. mnż I, D. u, Mc. halogennie, zwykle w lm {{/stl 8}}{{stl 20}} {{/stl 20}}{{stl 12}}1. {{/stl 12}}{{stl 7}} pierwiastek chemiczny, jeden z grupy bardzo aktywnych chemicznie niemetali (należą do nich: fluor, chlor, brom, jod …   Langenscheidt Polski wyjaśnień

  • halogen — [hal′ə jən] n. [ HALO + GEN] any of the five very reactive, nonmetallic chemical elements making up group VIIA of the periodic table: fluorine is the smallest and most reactive of the group, and astatine is the largest and least reactive: see the …   English World dictionary

  • Halogen — The halogens or halogen elements are a series of nonmetal elements from Group 17 IUPAC Style (formerly: VII, VIIA, or Group 7) of the periodic table, comprising fluorine, F; chlorine, Cl; bromine, Br; iodine, I; and astatine, At. The undiscovered …   Wikipedia

  • Halogen —     …   Deutsch Wikipedia

  • halogen — I UK [ˈhælədʒen] / US [ˈhælədʒən] noun [countable] Word forms halogen : singular halogen plural halogens chemistry a chemical element belonging to a group of five that combine with metals to form salts II UK [ˈhælədʒen] / US [ˈhælədʒən] adjective …   English dictionary

  • halogen — hal|o|gen [ˈhælədʒən] n [U] [Date: 1800 1900; : Swedish; Origin: Greek hals salt ] 1.) a halogen light uses halogen gas to produce light halogen bulb/lamp/light etc 2.) one of a group of five simple chemical substances that make ↑compounds easily …   Dictionary of contemporary English

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