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.
- Mendelevium metal is synthetically produced metal.
- Mendelevium metal has been produced in only trace amount.
1.2 Sources
Formed by Decay Process, Mining
Bombarding Einsteinium with Helium Ions
1.3 History
1.3.1 Who Discovered
Marguerite Perey
Lawrence Berkeley National Laboratory
1.3.2 Discovery
1.4 Abundance
1.4.1 Abundance In Universe
1.4.2 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
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