Facts About Promethium and Francium
Interesting Facts
- Promethium metal found in Pitchblende.
- Promethium metal is highly radioactive metal.
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
Sources
Found in Minerals, Mining
Formed by Decay Process, Mining
Who Discovered
Chien Shiung Wu, Emilio Segrè, Hans Bethe
Marguerite Perey
Discovery
In 1942
In 1939