Facts About Protactinium and Neodymium
Interesting Facts
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
  
- Neodymium is not found free in nature, hence it is not a native metal.
- Neodymium metal found in minerals like Monazite and Bastnaesite.
  
Sources
Found in Uranium Ores, Mining, Ores of metals
  
Found in Minerals, Mining
  
History
  
  
Who Discovered
William Crookes
  
Carl Auer von Welsbach
  
Discovery
In 1900
  
In 1885
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
~0.0000003 %
  
24
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust