Facts About Molybdenum and Praseodymium
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.
  
- Praseodymium metal is synthetically produced metal.
- Praseodymium is used as possible fuel for radioactive generators.
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Carl Wilhelm Scheele
  
Not Available
  
Discovery
In 1778
  
In 1885
  
Abundance
  
  
Abundance In Sun
~0.0000009 %
  
19
~0.0000001 %
  
26
Abundance In Earth's Crust
Abundance In Humans
Not Available