-
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...
-
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...
-
mineral in
coltan is
columbite (after niobium's
original American name
columbium), and the tantalum-dominant
mineral is tantalite.
Tantalum from coltan...
-
Charles Hatchett named element 41
columbium in 1801 (Cb), but
after the
publication of On the
Identity of
Columbium and
Tantalum by
William Hyde Wollaston...
-
Niobium oxide,
archaically called columbium oxide, may
refer to:
Niobium monoxide (niobium(II) oxide), NbO
Niobium dioxide (niobium(IV) oxide), NbO2 Niobium...
-
Hatchett had
discovered columbium (now niobium). In 1809, the
English chemist William Hyde
Wollaston compared the
oxides of
columbium and tantalum, columbite...
-
niobium in 1801 in
columbite ore.
Hatchett had
named the new
element "
columbium", from the ore in
which niobium and
tantalum coexist. The
element was...
-
Collateralized bond obligation, a type of
collateralized debt
obligation Columbium oxide (CbO), an
alternate name for
niobium oxide CBO, a
sandwich sold...
-
columbium (niobium) and the
closely related tantalum. In 1809,
English chemist William Hyde
Wollaston compared the
oxides derived from both
columbium—columbite...
-
James L.; Marshall,
Virginia R. (2013). "Rediscovery of the Elements:
Columbium and Tantalum" (PDF). The Hexagon: 20–25.
Retrieved 30
December 2019. W****s...
