Facts About Francium and Einsteinium
Interesting Facts
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
- Einsteinium is the transuranic element found in US.
- Only 0.01 mg of Einsteinium was synthesized in 1961.
Sources
Formed by Decay Process, Mining
Made by Bombarding Uranium with Neutrons
Who Discovered
Marguerite Perey
Lawrence Berkeley National Laboratory
Discovery
In 1939
In 1952
Abundance In Earth's Crust