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
Selenĭum — (Chem.), so v.w. Selen … Pierer's Universal-Lexikon
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 — [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