Facts About Francium and Roentgenium
Interesting Facts
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
Not Available
Sources
Formed by Decay Process, Mining
Synthetically Produced
Who Discovered
Marguerite Perey
Gesellschaft für Schwerionenforschung
Discovery
In 1939
In 1994