Francium (Fr)
Atomic Number: 87
Atomic Weight: (223)
Melting Point: 27
Boiling Point: 677
Specific Gravity: not known
Valences: 1
In 1939, francium was discovered by Perey in Paris. It is a radioactive chemical that is a result of
alpha disintegration of actinium. Francium can also be found naturally in uranium minerals.
Since francium is radioactive, there is probably less than an ounce of francium in all of the earth's
crust at any time.
[LM]
{RW}
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