Facts About Molybdenum and Thallium
Interesting Facts
- Molybdenum is highly reactive metal, hence not found free in nature .
- Till 18th century Molybdenum element were often mistaken as a carbon or Lead.
  
- Compounds of Thallium metal are highly Toxic.
- Thallium metal is being suspected as a human carcinogen.
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
Found As a By-product, Ores of metals, Ores of Minerals
  
History
  
  
Who Discovered
Carl Wilhelm Scheele
  
William Crookes
  
Discovery
In 1778
  
In 1861
  
Abundance
  
  
Abundance In Sun
~0.0000009 %
  
19
~0.0000001 %
  
26
Abundance In Earth's Crust
Abundance In Humans
Not Available