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vanadium |
4 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Vanadium \Va*na"di*um\, n. [NL., fr Icel. Vanad[=i]s, a surname of the Scandinavian goddess Freya.] (Chem.) A rare element of the nitrogen-phosphorus group found combined, in vanadates, in certain minerals, and reduced as an infusible, grayish-white metallic powder. It is intermediate between the metals and the non-metals, having both basic and acid properties. Symbol V (or Vd rarely). Atomic weight 51.2. From WordNet r 1.6 [wn]: vanadium n : a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite [syn: {V}, {atomic number 23}] From U.S. Gazetteer (1990) [gazetteer]: Vanadium, NM Zip code(s): 88023 From Elements database 20001107 [elements]: vanadium Symbol: V Atomic number: 23 Atomic weight: 50.9415 Soft and ductile, bright white metal. Good resistance to corrosion by alkalis, sulphuric and hydrochloric acid. It oxidizes readily about 933K. There are two naturally occurring isotopes of vanadium, and 5 radioisotopes, V-49 having the longest half-life at 337 days. Vanadium has nuclear applications, the foil is used in cladding titanium to steel, and vanadium-gallium tape is used to produce a superconductive magnet. Originally discovered by Andres Manuel del Rio of Mexico City in 1801. His discovery went unheeded, however, and in 1820, Nils Gabriel Sefstron of Sweden rediscovered it Metallic vanadium was isolated by Henry Enfield Roscoe in 1867. The name vanadium comes from {Vanadis}, a goddess of Scandinavian mythology. Silvery-white metallic transition element. Vanadium is essential to {ascidian}s. Rats and chickens are also known to require it Metal powder is a fire hazard, and vanadium compounds should be considered highly toxic. May cause lung cancer if inhaled.
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