- Francium is a
radioactive chemical element which is classified among the alkaline
earth metals on the periodic table.
- It is identified with
the symbol Fr and it has an atomic number of 87.
- It is a heavy,
unstable, radioactive metal with a maximum half-life of only 22
minutes. It occurs naturally to a very limited extent in uranium
minerals.
- It has a low melting
point and, if enough of it could be accumulated, it would be liquid
in a warm room.
- Francium isotopes are
obtained after thorium or uranium targets bombarding by high-energy
protons.
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