Chemical Elements.com - Francium (Fr)
Home About This Site Comments Help Links Window Version Show Table With: Name Atomic Number Atomic Mass Electron Configuration Number of Neutrons Melting Point Boiling Point Date of Discovery Crystal Structure Element Groups: Alkali Metals Alkaline Earth Metals Transition Metals Other Metals Metalloids Non-Metals Halogens Noble Gases Rare Earth Elements Basic Information | Atomic Structure | ...
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Visual Elements - Francium
Discovered : 1939 by Marguerite Perey in Paris, France Origin : The element is named after France. Description : An intensely radioactive metal, of which there are minute traces of uranium ores, but it is usually made from radium in nuclear reactors. It is difficult to investigate since the longest lived from, isotope 223, has a half life of only 22 minutes! Image : Gallic iconography. ...
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