Facts About Barium and Hafnium
Interesting Facts
- Barium oxidizes very easily in the air.
- All toxic compounds of Barium can easily dissolve in water.
- Barium carbonate is used to produce a Rat poison and its other compound Barium nitrate is used in fireworks to produce green color.
  
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
  
By-product Zirconium Refining
  
History
  
  
Who Discovered
Carl Wilhelm Scheele
  
Dirk Coster and George de Hevesy
  
Discovery
In 1772
  
In 1922
  
Abundance
  
  
Abundance In Sun
~0.000001 %
  
18
~0.0000001 %
  
26
Abundance In Earth's Crust
Abundance In Humans
Not Available