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1 alkali
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2 цезий
цезий
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
caesium
A soft silvery-white and highly reactive metal belonging to the alkali group of metals. It is a radiation hazard, because it can occur in two radioactive forms. Caesium-134 is produced in nuclear reactors, not directly by fission, but by the reaction. It emits beta- and gamma-radiation and has a half-life of 2.06 years. Caesium-137 is a fission product of uranium and occurs in the fallout from nuclear weapons. It emits beta- and gamma-rays and has a half-life of 30 years. Caesium-137 was the principal product released into the atmosphere, and hence the food chain, from atmospheric testing of nuclear weapons and from the Windscale fire and Chernobyl nuclear accidents. After the Chernobyl accident, which spread a radiation cloud across Europe, the European Commission proposed new and more restrictive limits on levels of caesium in food and drinking water. (Source: WRIGHT)
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Русско-французский словарь нормативно-технической терминологии > цезий
См. также в других словарях:
Alkali metal — Any one of the univalent metals of group I of the periodic table of the elements, including lithium, sodium, potassium, rubidium, cesium, and francium. The hydroxides of these metals are soluble in water and form strongly basic solutions. [PJC.] … The Collaborative International Dictionary of English
alkali metal — n any of the univalent mostly basic metals of group I of the periodic table comprising lithium, sodium, potassium, rubidium, cesium, and francium * * * one of a group of monovalent metals including lithium, sodium, potassium, rubidium, and cesium … Medical dictionary
alkali metal — n. Chem. any of the six highly reactive metals in group IA of the periodic table including, in increasing order of reactivity, lithium, sodium, potassium, rubidium, cesium, and francium: see the periodic table of elements in the Reference… … English World dictionary
alkali metal — Chem. any of the group of univalent metals including potassium, sodium, lithium, rubidium, cesium, and francium, whose hydroxides are alkalis. [1880 85] * * * Any of the six chemical elements in the leftmost group of the periodic table (lithium,… … Universalium
Alkali metal — Group → 1 ↓ Period 2 3 Li 3 … Wikipedia
alkali metal — UK / US noun [countable] Word forms alkali metal : singular alkali metal plural alkali metals chemistry a soft, white metal that is a chemical element. Lithium, sodium, and potassium are alkali metals … English dictionary
alkali metal — šarminis metalas statusas T sritis fizika atitikmenys: angl. alkali metal vok. Alkalimetall, n rus. щелочной металл, m pranc. métal alcalin, m … Fizikos terminų žodynas
Alkali-metal thermal to electric converter — The Alkali Metal Thermoelectric Converter (AMTEC) is a thermally regenerative electrochemical device for the direct conversion of heat to electrical energy. It is characterized by high potential efficiencies and no moving parts, which make it a… … Wikipedia
alkali metal — noun any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium) the hydroxides of the alkali metals are strongly alkaline • Syn: ↑alkaline metal • Hypernyms: ↑metallic element … Useful english dictionary
alkali metal — noun Any of the soft, light, reactive metals of Group 1 of the periodic table; lithium, sodium, potassium, rubidium, cesium, and francium. See Also: alkaline earth metal … Wiktionary
alkali metal — a metal in group IA of the periodic table that form strongly alkaline hydroxides (lithium, sodium, potassium, rubidium, cesium, francium) … Mechanics glossary