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Niobium, formerly columbium, is a chemical element with 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 ...
Dbpediathing
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, ...
Scientist
Wilhelm Heinrich Heintz (4 November 1817 – 1 December 1880) was a German structural chemist who earned his PhD at Berlin in 1844 under Heinrich Rose.He was one of six founding members of the Deutsche ...
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