Facts About Protactinium and Terbium
Interesting Facts
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
  
- At times Terbium metal acts same as Calcium.
- Terbium metal closely similar to Lanthanum metal.
  
Sources
Found in Uranium Ores, Mining, Ores of metals
  
Found in Minerals, Found with Other Rare Earth Metals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
William Crookes
  
Carl Gustaf Mosander
  
Discovery
In 1900
  
In 1842
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
~0.00000001 %
  
29
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust