Facts About Thulium and Lanthanum
Interesting Facts
- Thulium metal can resist corrosion due to dry air .
- Only Tm-169 isotope of Thulium metal occur naturally.
  
- Lanthanum metal is highly malleable, ductile and sectile.
- If exposed to air Lanthanum metal oxidizes rapidly.
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Per Teodor Cleve
  
Carl Gustaf Mosander
  
Discovery
In 1879
  
In 1838
  
Abundance
  
  
Abundance In Sun
~0.00000002 %
  
28
~0.0000002 %
  
25
Abundance In Earth's Crust