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vanadium    音标拼音: [vən'ediəm]
n. 钒

钒

vanadium
n 1: a soft silvery white toxic metallic element used in steel
alloys; it occurs in several complex minerals including
carnotite and vanadinite [synonym: {vanadium}, {V}, {atomic
number 23}]

Vanadium \Va*na"di*um\, n. [NL., fr. Icel. Vanad[imac]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 50.94 (C12=12.000).
[1913 Webster PJC]

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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  • Vanadium - Wikipedia
    Vanadium is a chemical element; it has symbol V and atomic number 23 It is a hard, silvery-grey, malleable transition metal The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer (passivation) somewhat stabilizes the free metal against further oxidation
  • Vanadium - Uses, Side Effects, and More - WebMD
    Vanadium is a trace mineral regularly consumed in the diet It's found in mushrooms, shellfish, black pepper, parsley, grains, and also drinking water Vanadium might act like insulin or help
  • Vanadium | Facts, Industrial, Medical, Automotive Applications . . .
    vanadium (V), chemical element, silvery white soft metal of Group 5 (Vb) of the periodic table It is alloyed with steel and iron for high-speed tool steel, high-strength low-alloy steel, and wear-resistant cast iron
  • Vanadium - Element information, properties and uses | Periodic Table
    Vanadium is found in about 65 different minerals including vanadinite, carnotite and patronite It is also found in phosphate rock, certain iron ores and some crude oils in the form of organic complexes
  • Understanding Vanadium: Uses, Properties, and Applications
    Vanadium is a chemical element with the atomic number 23 and the symbol "V " It is a soft, silvery-gray, ductile transition metal The element is primarily used in various high-strength steel alloys
  • Vanadium - Arkansas
    Vanadium (V) is a metal with a moderate specific gravity (6 0) and a relatively high melting point (1710° C) Vanadium is often considered to be an uncommon element, but its abundance in the earth's crust is actually comparable to that of copper, nickel, and zinc
  • Vanadium | V (Element) - PubChem
    Periodic Table Vanadium Vanadium is a chemical element with symbol V and atomic number 23 Classified as a transition metal, Vanadium is a solid at 25°C (room temperature)
  • Periodic Table of Elements: Los Alamos National Laboratory
    Pure vanadium is a bright white metal, and is soft and ductile It has good corrosion resistance to alkalis, sulfuric and hydrochloric acid, and salt water, but the metal oxidizes readily above 660°C
  • Vanadium Element Facts - chemicool. com
    Vanadium is a bright white, soft, ductile metal with good structural strength Vanadium is resistant to attack by alkalis, hydrochloric acid, sulfuric acid, and salt water
  • Vanadium, Chemical Element - reaction, water, uses, elements, metal . . .
    Vanadium is a transition metal that lies toward the middle of the periodic table The periodic table is a chart that shows how chemical elements are related to one another





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