Facts About Dubnium and Promethium
Interesting Facts
- IUPAC allotted a temporary name to Dubnium metal as “ Unnilpentium”.
- In the production of Dubnium, thermal gradient chromatography is used.
  
- Promethium metal found in Pitchblende.
- Promethium metal is highly radioactive metal.
  
Sources
Produced by Bombarding Am243 with Ne22, Synthetically Produced
  
Found in Minerals, Mining
  
History
  
  
Who Discovered
Joint Institute for Nuclear Research
  
Chien Shiung Wu, Emilio Segrè, Hans Bethe
  
Discovery
In 1968
  
In 1942
  
Abundance