Facts About Thulium and Niobium
Interesting Facts
- Thulium metal can resist corrosion due to dry air .
- Only Tm-169 isotope of Thulium metal occur naturally.
  
- Niobium metal was used to get called Columbium in past.
- Niobium metal found freely in nature (abundance).
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
By-product of Tin Extraction, Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Per Teodor Cleve
  
Charles Hatchett
  
Discovery
In 1879
  
In 1801
  
Abundance
  
  
Abundance In Sun
~0.00000002 %
  
28
~0.0000004 %
  
23
Abundance In Earth's Crust