Facts About Holmium and Polonium
Interesting Facts
- Holmium metal is very soft and malleable.
- Holmium metal is well known for its corrosion resistivity.
  
- 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.
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
Mining, Ores of metals
  
History
  
  
Who Discovered
Marc Delafontaine
  
Pierre Curie and Marie Curie
  
Discovery
In 1878
  
In 1898
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available