Niobium

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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Niobium

• (n.) A later name of columbium. See Columbium. • (n.) A later name of columbium. See Columbium.
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niobium

(Nb) (ni-o´be-әm) a chemical element, atomic number 1, atomic weight 92.906.
Found on http://www.encyclo.co.uk/local/21001

niobium

Nb noun a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium
Found on https://www.encyclo.co.uk/local/20974

niobium

(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

Ni·o'bi·um noun [ New Latin , from Latin & English Niobe .] (Chemistry) A later name of columbium. See Columbium .
Found on http://www.encyclo.co.uk/webster/N/23

niobium

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]
Found on http://www.britannica.com/eb/a-z/n/43

niobium

niobium (nīō'bēum) , metallic chemical element; symbol Nb; at. no. 41; at. wt. 92.9064; m.p. about 2,468°C; b.p. 4,742°C; sp. gr. 8.57 at 20°C; valence +2, +3, +4, or +5. Niobium is a rare, soft, malleable, ductile, gray-white metal with a body-centered cubic crysta...
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Niobium

Niobium is a metal element with the symbol Nb.
Found on http://www.probertencyclopaedia.com/browse/GN.HTM

Niobium

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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niobium

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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niobium

[n] - a soft gray ductile metallic element used in alloys
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