Facts About Terbium and Hafnium
Interesting Facts
- At times Terbium metal acts same as Calcium.
- Terbium metal closely similar to Lanthanum metal.
  
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
  
Sources
Found in Minerals, Found with Other Rare Earth Metals, Mining, Ores of Minerals
  
By-product Zirconium Refining
  
History
  
  
Who Discovered
Carl Gustaf Mosander
  
Dirk Coster and George de Hevesy
  
Discovery
In 1842
  
In 1922
  
Abundance
  
  
Abundance In Sun
~0.00000001 %
  
29
~0.0000001 %
  
26
Abundance In Earth's Crust