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