Facts About Niobium and Thallium
Interesting Facts
- Niobium metal was used to get called Columbium in past.
- Niobium metal found freely in nature (abundance).
  
- Compounds of Thallium metal are highly Toxic.
- Thallium metal is being suspected as a human carcinogen.
  
Sources
By-product of Tin Extraction, Found in Minerals, Mining, Ores of Minerals
  
Found As a By-product, Ores of metals, Ores of Minerals
  
History
  
  
Who Discovered
Charles Hatchett
  
William Crookes
  
Discovery
In 1801
  
In 1861
  
Abundance
  
  
Abundance In Sun
~0.0000004 %
  
23
~0.0000001 %
  
26
Abundance In Earth's Crust