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The Element Francium - Basic Physical and Historical Information ...

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. ...