sodium
sodium
Symbol: Na
Atomic number: 11
Atomic weight: 22.9898
Soft silvery reactive element belonging to group 1 of the periodic table (alkali metals). It is highly reactive, oxidizing in air and reacting violently with water, forcing it to be kept under oil. It was first isolated by Humphrey Davy in 1807.

Elements of periodic system. 2013.

  • SODIUM — Le sodium est le plus courant des éléments alcalins. Son nom dérive de l’arabe soda , qui désignait le mélange de carbonates alcalins extrait des cendres de végétaux. Le symbole Na vient de son appellation allemande Natrium , qui dérive de… …   Encyclopédie Universelle

  • Sodium — Néon ← Sodium → Magnésium Li …   Wikipédia en Français

  • Sodium — So di*um, n. [NL., fr.E. soda.] (Chem.) A common metallic element of the alkali group, in nature always occuring combined, as in common salt, in albite, etc. It is isolated as a soft, waxy, white, unstable metal, so highly reactive that it… …   The Collaborative International Dictionary of English

  • sodium — metallic alkaline element, 1807, coined by English chemist Humphry Davy from SODA (Cf. soda); so called because the element was isolated from caustic soda (sodium hydroxide). The chemical symbol Na is from natrium, alternative name for the… …   Etymology dictionary

  • sodium — [sō′dē əm] n. [ModL: so named (1807) by DAVY Sir Humphry < SODA (because isolated from caustic soda) + IUM] 1. a soft, silver white, metallic chemical element, one of the alkali metals, having a waxlike consistency: it is found in nature only… …   English World dictionary

  • Sodium — Sodium, so v.w. Natrium …   Pierer's Universal-Lexikon

  • Sodĭum — Sodĭum, soviel wie Natrium …   Meyers Großes Konversations-Lexikon

  • Sodium — Sodium, s.v.w. Natrium (s.d.) …   Lexikon der gesamten Technik

  • Sodium — Sodĭum, s.v.w. Natrium …   Kleines Konversations-Lexikon

  • sodium — ► NOUN ▪ a soft silver white reactive metallic chemical element of which common salt and soda are compounds. ORIGIN from SODA(Cf. ↑soda) …   English terms dictionary