Facts About Neodymium and Protactinium
Interesting Facts
- Neodymium is not found free in nature, hence it is not a native metal.
- Neodymium metal found in minerals like Monazite and Bastnaesite.
  
- 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
Carl Auer von Welsbach
  
William Crookes
  
Discovery
In 1885
  
In 1900
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~0.0000003 %
  
24
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust