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niobium
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The answer NIOBIUM has 24 possible clue(s) in existing crosswords.
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Definitions of niobium in various dictionaries:
noun - a soft grey ductile metallic element used in alloys
adj - a metallic element [n -S] : NIOBIC, NIOBOUS
NIOBIUM - Niobium, formerly known as columbium, is a chemical element with symbol Nb (formerly Cb) and atomic number 41. It is a soft, grey, crystalline, ducti...
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A silvery, soft, ductile metallic element that occurs chiefly in columbite-tantalite and is used in steel alloys, arc welding, and superconductivity research. Atomic number 41 atomic weight 92.906 melting point 2,468C boiling point 4,927C specific gravity 8.57 valence 2, 3, 5. See Table at element. |
the chemical element of atomic number 41, a silver-grey metal of the transition series, used in superconducting alloys. |
a soft gray ductile metallic element used in alloys occurs in niobite formerly called columbium |
Niobium description |
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Niobium, formerly known as columbium, is a chemical element with symbol Nb (formerly Cb) and atomic number 41. It is a soft, grey, crystalline, ductile transition metal, often found in the minerals pyrochlore and columbite, hence the former name "columbium". Its name comes from Greek mythology, specifically Niobe, who was the daughter of Tantalus, the namesake of tantalum. The name reflects the great similarity between the two elements in their physical and chemical properties, making them difficult to distinguish.The English chemist Charles Hatchett reported a new element similar to tantalum in 1801 and named it columbium. In 1809, the English chemist William Hyde Wollaston wrongly concluded that tantalum and columbium were identical. The German chemist Heinrich Rose determined in 1846 that tantalum ores contain a second element, which he named niobium. In 1864 and 1865, a series of scientific findings clarified that niobium and columbium were the same element (as distinguished from t |