Facts About Niobium and Protactinium
Interesting Facts
- Niobium metal was used to get called Columbium in past.
- Niobium metal found freely in nature (abundance).
  
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
  
Sources
By-product of Tin Extraction, Found in Minerals, Mining, Ores of Minerals
  
Found in Uranium Ores, Mining, Ores of metals
  
History
  
  
Who Discovered
Charles Hatchett
  
William Crookes
  
Discovery
In 1801
  
In 1900
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~0.0000004 %
  
23
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust