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Niobium is a
chemical element; it has
symbol Nb (formerly
columbium, Cb) and
atomic number 41. It is a
light grey, crystalline, and
ductile transition...
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mineral in
coltan is
columbite (after niobium's
original American name
columbium), and the tantalum-dominant
mineral is tantalite.
Tantalum from coltan...
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chemist who
discovered the
element niobium, for
which he
proposed the name "
columbium".
Hatchett was
elected a
Fellow of the
Linnaean Society in 1795, and of...
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Hatchett had
discovered columbium (now niobium). In 1809, the
English chemist William Hyde
Wollaston compared the
oxides of
columbium and tantalum, columbite...
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Niobium oxide,
sometimes called columbium oxide,[citation needed] may
refer to:
Niobium monoxide (niobium(II) oxide), NbO
Niobium dioxide (niobium(IV)...
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designed to
protect an
electrical circuit from
damage caused by
overcurrent Columbium (Cb), an
obsolete name for the
element niobium Conduction band of the...
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Collateralized bond obligation, a type of
collateralized debt
obligation Columbium oxide (CbO), an
alternate name for
niobium oxide CBO, a
sandwich sold...
- The
element niobium was
first called columbium, a name
which some
people still use today. The name
columbium,
coined by the
chemist Charles Hatchett...
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columbium (niobium) and the
closely related tantalum. In 1809,
English chemist William Hyde
Wollaston compared the
oxides derived from both
columbium—columbite...
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Niobium monoxide is the
inorganic compound with the
formula NbO. It is a grey
solid with
metallic conductivity. NbO
adopts an
unusual cubic structure,...
