Facts About Thulium and Promethium
Interesting Facts
- Thulium metal can resist corrosion due to dry air .
- Only Tm-169 isotope of Thulium metal occur naturally.
- Promethium metal found in Pitchblende.
- Promethium metal is highly radioactive metal.
Sources
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining
Who Discovered
Per Teodor Cleve
Chien Shiung Wu, Emilio Segrè, Hans Bethe
Discovery
In 1879
In 1942
Abundance In Meteorites
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Abundance In Earth's Crust