Facts About Polonium and Thulium
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.
  
- Thulium metal can resist corrosion due to dry air .
- Only Tm-169 isotope of Thulium metal occur naturally.
  
Sources
Mining, Ores of metals
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Pierre Curie and Marie Curie
  
Per Teodor Cleve
  
Discovery
In 1898
  
In 1879
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
~0.00000002 %
  
28
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available