Facts About Potassium and Protactinium
Interesting Facts
- In the list of most abundant element Potassium is ranked 7th.
- Potassium can easily be sliced (chopped) down using knife.
  
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
  
Sources
Found in Minerals, Mining
  
Found in Uranium Ores, Mining, Ores of metals
  
History
  
  
Who Discovered
Humphry Davy
  
William Crookes
  
Discovery
In 1807
  
In 1900
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Abundance In Humans
Not Available