Facts About Potassium and Molybdenum
Interesting Facts
- In the list of most abundant element Potassium is ranked 7th.
- Potassium can easily be sliced (chopped) down using knife.
  
- Molybdenum is highly reactive metal, hence not found free in nature .
- Till 18th century Molybdenum element were often mistaken as a carbon or Lead.
  
Sources
Found in Minerals, Mining
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Humphry Davy
  
Carl Wilhelm Scheele
  
Discovery
In 1807
  
In 1778
  
Abundance
  
  
Abundance In Sun
~0.0000009 %
  
19
Abundance In Earth's Crust