1 Facts
1.1 Interesting Facts
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
1.2 Sources
Formed by Decay Process, Mining
1.3 History
1.3.1 Who Discovered
Marguerite Perey
1.3.2 Discovery
In 1939
1.4 Abundance
1.4.1 Abundance In Universe
1.4.2 Abundance In Sun
1.4.3 Abundance In Meteorites
1.4.4 Abundance In Earth's Crust
1.4.5 Abundance In Oceans
1.4.6 Abundance In Humans