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More About Francium
What the name means: Francium was named after France, the country where it was first identified.
Who identified francium?: Francium was identified by Marguerite Perey, working at the Curie Institute in Paris, in 1939. Marguerite Perry and been Marie Curie's assistant and she carried on the work of analysis of the radio active ore, pitchblende, after Marie Curie's death. Francium was identified from the radio active decay of actinium.
STP = standard temperature and pressure.
About francium: Francium has a very short half life of around 20 minutes. For this reason it is very rare in the Earth's crust (probably around 10 grammes at any given time!). The francium that does exist is found in trace amounts in uranium ores. Francium metal has never been seen with the naked eye. It is formed from the radio active decay of actinium.
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