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yttrium.asc
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1992-07-14
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601b
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17 lines
YTTRIUM
Atomic symbol - Y
Atomic weight - 88.90585
Atomic number - 39
Electron configuration - 2-8-18-9-2
Oxidation states - +3
State of matter - solid
Heavy metal-brittle
Discovered in 1794 by Johan Gadolin
Boils at 3337 °C, melts at 1523 °C
Notes:
Yttrium is used for red phosphorus in color TV's. It is a silvery metal,
ductile, and fairly reactive. Yttrium is the first rare earth element
discovered. Yttrium can occur as a by-product of nuclear fission. It is an
important element in the high-tech superconductor, yttrium barium copper oxide.