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bn:00006872n

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niobium Nb atomic number 41 41Nb Cb

A soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium WordNet 3.0

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A soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium WordNet 3.0 & Open English WordNet

Niobium is a chemical element; it has symbol Nb and atomic number 41. Wikipedia

Symbol Nb, a chemical element Wikipedia Disambiguation

Chemical element with symbol Nb and atomic number 41 Wikidata

Chemical element with symbol Nb and atomic number 41, shiny grey transition metal. OmegaWiki

A chemical element (symbol Nb) with an atomic number of 41: a light grey, crystalline, ductile transition metal used in superconducting materials. Wiktionary

Chemical element. Wiktionary (translation)

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