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ni-o-bi-um ;noun
Symbol NbA silvery, soft, ductile metallic element that occurs
mainly in
columbite-tantalite and is used in
steel alloys, arc welding, and
superconductivity research.
Named after Niobe,
The daughter of Tantalus.(mithology)
Atomic number: 41
Atomic weight: 92.906
Melting point: 2,468°C
Boiling point: 4,927°C
Density: 8.57