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PRASEODYMIUM
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Atomic Symbol |
Pr |
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Atomic Weight |
140.90765 |
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Atomic Number |
59 |
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Electron Configuration |
2-8-18-21-8-2 |
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Oxidation States |
+3
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State of Matter |
Solid heavy metal-brittle |
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Boiling Point |
3212 °C |
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Melting Point |
931 °C |
HISTORY,
BACKGROUND & USES:
Discovered in 1885 by Carl Auer von Welsbach. Praseodymium is used in special alloys and glasses. It is moderately
soft, ductile, and malleable, and is a silvery color. Small amounts
of praseodymium are used in a rare-earth alloy used to make cigarette
lighter flints and high- strength, low-creep magnesium alloys
used for jet-engine parts.
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