Facts About Thulium and Praseodymium
Interesting Facts
- Thulium metal can resist corrosion due to dry air .
- Only Tm-169 isotope of Thulium metal occur naturally.
  
- Praseodymium metal is synthetically produced metal.
- Praseodymium is used as possible fuel for radioactive generators.
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Per Teodor Cleve
  
Not Available
  
Discovery
In 1879
  
In 1885
  
Abundance
  
  
Abundance In Sun
~0.00000002 %
  
28
~0.0000001 %
  
26
Abundance In Earth's Crust