Selenĭum
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Selenium — (pronEng|səˈliniəm) is a chemical element with the atomic number 34, represented by the chemical symbol Se, an atomic mass of 78.96. It is a nonmetal, chemically related to sulfur and tellurium, and rarely occurs in its elemental state in nature … Wikipedia
Sélenium — Sélénium Sélénium Arsenic … Wikipédia en Français
SÉLÉNIUM — Le sélénium a été découvert en 1817 par Jöns Jacob Berzelius dans les boues des chambres de plomb utilisées pour la préparation de l’acide sulfurique. C’est un élément rare, présent très souvent à l’état de traces dans les sulfures naturels où il … Encyclopédie Universelle
Selenium — Entwickler ThoughtWorks Aktuelle Version 2.11.0 (28. Oktober 2011) Betriebssystem Microsoft Windows, Linux, Mac OS X, Solaris, FreeBSD und andere Unix Varianten (basiert auf … Deutsch Wikipedia
Selenium-79 — is a radioisotope of selenium present in spent nuclear fuel and the wastes resulting from reprocessing this fuel. It is one of only 7 long lived fission products. Its yield is low (about 0.04%) as it it is near the lower end of the mass range for … Wikipedia
selenium — SELÉNIUM s.n. v. seleniu. Trimis de LauraGellner, 13.09.2007. Sursa: DEX 98 SELÉNIUM s.n. v. seleniu. Trimis de LauraGellner, 13.09.2007. Sursa: DN … Dicționar Român
Selenium — Se*le ni*um, n. [NL., from Gr. selh nh the moon. So called because of its chemical analogy to tellurium (from L. tellus the earth), being, as it were, a companion to it.] (Chem.) A nonmetallic element of the sulphur group of atomic number 34,… … The Collaborative International Dictionary of English
selenium — Symbol: Se Atomic number: 34 Atomic weight: 78.96 Metalloid element, belongs to group 16 of the periodic table. Multiple allotropic forms exist. Chemically resembles sulphur. Discovered in 1817 by Jons J. Berzelius … Elements of periodic system
selenium — (n.) element name, Modern Latin, from Gk. selene moon (see SELENE (Cf. Selene)). Named by Berzelius (1818), on analogy of TELLURIUM (Cf. tellurium), with which it had been at first confused, and which was named for the earth. Despite the ium… … Etymology dictionary
selenium — [sə lē′nē əm] n. [ModL: so named (1818) by BERZELIUS Baron Jöns Jakob < Gr selēnē, the moon (see SELENE) + IUM, by analogy with TELLURIUM, with which it was assoc. in the ore] a nonmetallic chemical element with several allotropic forms, used… … English World dictionary
