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NIOBIUM.ASC
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1992-07-14
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607b
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17 lines
NIOBIUM
Atomic symbol - Nb
Atomic weight - 92.90638
Atomic number - 41
Electron configuration - 2-8-18-12-1
Oxidation states - +3, +5
State of matter - solid
Heavy metal-brittle
Discovered in 1801 by Charles Hatchett
Boils at 4927 °C, melts at 2468 °C
Notes:
Niobium is soft and ductile when in pure form. It's used alloys, tools, dyes,
and superconductive magnets. It's quite corrosion resistant but needs
protection from oxidation ot temperature in excess of 400 °C. It is useful
in the manufacture of cryogenic electronic devices that draw low power.