
1) Atomic number 41 2) Chemical element 3) Element discovered in 1801 4) Element number 41 5) Element used in alloy steels 6) Element with the symbol Nb 7) Lustrous metallic element 8) Metal 9) Metallic element 10) Occurs in niobite 11) Refractory metal
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1) Columbium 2) Nb
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Niobium, formerly columbium, is a chemical element with the symbol Nb (formerly Cb) and atomic number 41. It is a soft, grey, ductile transition metal, which is often found in the pyrochlore mineral, the main commercial source for niobium, and columbite. The name comes from Greek mythology: Niobe, daughter of Tantalus. Niobium has physical and che...
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• (n.) A later name of columbium. See Columbium. • (n.) A later name of columbium. See Columbium.
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chemical element, refractory metal of Group Vb of the periodic table, used in alloys, tools and dies, and superconductive magnets. Niobium is closely ... [3 related articles]
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http://www.britannica.com/eb/a-z/n/43

(Nb) (ni-o´be-әm) a chemical element, atomic number 1, atomic weight 92.906.
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Ni·o'bi·um noun [ New Latin , from Latin & English
Niobe .]
(Chemistry) A later name of columbium. See
Columbium .
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(Nb) Type: Term Pronunciation: nī-ō′bē-ŭm Definitions: 1. A rare metallic element, atomic no. 41, atomic wt. 92.90638, usually found with tantalum.
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Niobium is a metal element with the symbol Nb.
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[
n] - a soft gray ductile metallic element used in alloys
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(Chemical symbol Nb) Element No. 41 of the periodic system. See Columbium
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Also known as Columbium. Improves strength and toughness. Provides corrosion resistance. Improves grain refinement and precipitation hardening.
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Niobium is a silver coloured metal which is generally found in conjunction with tantalum, the two elements being separated by fractional crystallisation of their respective fluoro-complexes. As a pure metal, is very reactive and forms an extremely stable oxide when exposed to air which enhances its corrosion resistance. Niobium will react with a va...
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Nb noun a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium
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Soft, grey-white, somewhat ductile and malleable, metallic element, atomic number 41, relative atomic mass 92.906. It occurs in nature with tantalum, which it resembles in chemical properties. It is used in making stainless steel and other alloys for jet engines and rockets and for making superconductor magnets. Niobium was discovered in 1801 b...
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a steel-gray metallic element resembling tantalum in its chemical properties; becomes a superconductor below 9 K; used chiefly in alloy steels. Symbol: Nb; at. no.: 41; at. wt.: 92.906; sp. gr.: 8.4 at 20°C.
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