Niobium

created by Webster 1913

(thing) by CentrX (6.1 mon) (print) ? 1 C! I like it! Wed Nov 29 2000 at 21:30:13

(So named (Greek Niobe) in 1844 by Heinrich Rose because of its close relationship with tantalum) A gray or white, metallic chemical element, somewhat ductile and malleable, used in steel alloys, superconducting alloys, in jet engines and rockets, etc.

(thing) by SSMark82 (1.6 y) (print) ? I like it! Thu Dec 07 2000 at 3:14:28

Niobium
Symbol: Nb
Atomic Number: 41
Atomic Weight: 92.9064
Boiling Point: 5015 K
Melting Point: 2742 K
Density at 300K: 8.57 g/cm³
Covalent radius: 1.34
Atomic radius: 2.08
Atomic volume: 10.80 cm³/mol
First ionization potental: 6.88 V
Specific heat capacity: 0.265 Jg^-1K^-1
Thermal conductivity: 53.7 Wm^-1K^-1
Electrical conductivity: 6.6 10⁶Ω^-1m^-1
Heat of fusion: 26.9 kJ/mol
Heat of vaporization: 690.1 kJ/mol
Electronegativity: 1.6 (Pauling's)

(definition) by Webster 1913 (print) I like it! Wed Dec 22 1999 at 1:26:45

Ni*o"bi*um (?), n. [NL., fr. L. & E. Niobe.] Chem.

A later name of columbium. See Columbium.

Columbium	I got pierced	Molybdenum	Tantalum
Metals present in a modern car	Orbital Maneuvering System	Osmium	June 19, 2005
Hafnium	Niobe	Selenium	Zirconium
body jewelry	Nitrogen	A day in the life of Everything, Kansas	Neodymium
NMR	The Devil's Dictionary	titanium	Petiole
Barium	hypoallergenic	Nb	quasit

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