Facts About Polonium and Hafnium
Interesting Facts
- Polonium was the first radioactive element to be discovered.
- Polonium element and its compounds are highly radioactive.
- Its alloy with Beryllium provides source of neutrons.
  
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
  
Sources
Mining, Ores of metals
  
By-product Zirconium Refining
  
History
  
  
Who Discovered
Pierre Curie and Marie Curie
  
Dirk Coster and George de Hevesy
  
Discovery
In 1898
  
In 1922
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
~0.0000001 %
  
26
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available