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Explore the World of Soft…e: Engineering & Science
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THULIUM.ASC
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1992-09-10
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373b
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14 lines
THULIUM
Atomic symbol - Tm
Atomic weight - 168.93421
Atomic number - 69
Electron configuration - 2-8-18-31-8-2
Oxidation states - +3
State of matter - solid
Heavy metal-brittle
Discovered in 1879 by Per Teodor Cleve
Boils at 1727 °C, melts at 1545 °C
Notes:
Useful in small portable X-Ray units, thulium has few other uses.