Name:
Francium
Symbol:
Fr
Atomic Number:
87
Atomic Mass:
(223)
Atomic Volume:
??? cc/mol
Discovered By:
Perey
Discovery Date:
1939
Origin of Name:
Francium - named for France
Toxicity:
???
Summary:
Produced naturally only by the breakdown of radioactive elements. Francium is the most electropositive element. The longest-lived isotope, Fr-223, has a half-life of 22 minutes.
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