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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.
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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