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1 sali delle terre rare
m pl [CHIM] -
2 neodymium
n. <I>(also: <B>Nd</B>)</I> neodymium, rare metallic element used in lasers which has rose-colored salts, lanthanide rare earth element -
3 praseodimi
[Swahili Word] praseodimi[English Word] praseodymium[Part of Speech] noun[Class] 9[Dialect] recent[English Definition] a yellowish white trivalent metallic element of the rare-earth group used chiefly in the form of its salts in coloring glass greenish yellow (identified 1885)[Terminology] chemistry------------------------------------------------------------ -
4 praseodymium
[English Word] praseodymium[Swahili Word] praseodimi[Part of Speech] noun[Class] 9[Dialect] recent[English Definition] a yellowish white trivalent metallic element of the rare-earth group used chiefly in the form of its salts in coloring glass greenish yellow (identified 1885)[Terminology] chemistry------------------------------------------------------------
См. также в других словарях:
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 earth element — Rare earth ore, shown with a United States penny for size comparison These rare … Wikipedia
rare earth — noun any element of the lanthanide series (atomic numbers 57 through 71) (Freq. 1) • Syn: ↑rare earth element, ↑lanthanoid, ↑lanthanide, ↑lanthanon • Hypernyms: ↑group, ↑grouping … Useful english dictionary
rare earth element — noun Any of a group of soft, lustrous, sometimes magnetic metals that form trivalent salts; they include the lanthanides plus yttrium, scandium, thorium and sometimes zirconium. Syn … Wiktionary
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
Alkaline earth metal — Group 2 Period 2 4 Be 3 … Wikipedia
alkaline-earth metal — /al keuh luyn errth , lin /, Chem. any of the group of bivalent metals including barium, radium, strontium, calcium, and, usually, magnesium, the hydroxides of which are alkalis but less soluble than those of the alkali metals. [1900 05] * * * ▪… … Universalium
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