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