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francium
Francium is a alkali metal , (FR) and it's atomic number is 87 and it's aomic mass is 223. Physical properties: Boiling point: 677 degrees calcius Phase: Solid Melting point: 80 degrees calcius Density: 1.87 g.cm negative cubed
There is only 2 found uses for francium: some atomic bombs, and scientific research in specialized labs, because it is so rare to find and have a half life expectincy of 22 mins - 2 hours
