- rare gases
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редкие газы
English-Russian dictionary of geology. 2011.
rare gases
Смотреть что такое "rare gases" в других словарях:
rare — [ rar ] adj. • 1377; rere adj. fém. v. 1236; lat. rarus 1 ♦ (Généralt après le nom) Qui se rencontre peu souvent, dont il existe peu d exemplaires. Objet rare. Chercher une chose rare (cf. Mouton à cinq pattes, merle blanc). Pierres rares. ⇒… … Encyclopédie Universelle
rare — rare1 rareness, n. /rair/, adj., rarer, rarest. 1. coming or occurring far apart in time; unusual; uncommon: a rare disease; His visits are rare occasions. 2. thinly distributed over an area; few and widely separated: Lighthouses are rare on that … Universalium
rare — I [[t]rɛər[/t]] adj. rar•er, rar•est 1) occurring or found infrequently; markedly uncommon: a rare disease[/ex] 2) having the component parts loosely compacted; thin: rare gases[/ex] 3) unusually great 4) admirable; exemplary: She showed rare… … From formal English to slang
Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare … Wikipedia
rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 … Universalium
rare gas — /rɛə ˈgæs / (say rair gas) noun any of the gases helium, neon, argon, krypton, xenon, and radon; chemically inactive, although some compounds have been reported. Also, inert gas, noble gas …
chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… … Universalium
chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… … Universalium
noble gas — Chem. any of the chemically inert gaseous elements of group 8A or 0 of the periodic table: helium, neon, argon, krypton, xenon, and radon. Also called inert gas. [1900 05] * * * or inert gas Any of the six chemical elements that make up the… … Universalium
Noble gas — Group 18 Period 1 2 He 2 … Wikipedia
Inert gas — Inert gases is also used in a narrower sense for noble gases. An inert gas is any gas that is not reactive with elements.Like the noble gases an inert gas is not necessarily elemental and are often molecular gases. Like the noble gases the… … Wikipedia
