What is the state of francium at room temperature solid, liquid or gas
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Discovery date1939 Discovered byMarguerite Perey Origin of the nameFrancium is named after France. Allotropes
FrFrancium 87[223] Group1 Melting point21°C, 70°F, 294 K Period7 Boiling point650°C, 1202°F, 923 K Blocks Density (g cm−3)Unknown Atomic number87 Relative atomic mass[223] State at 20°CSolid Key isotopes223Fr Electron configuration[Rn] 7s1 CAS number7440-73-5
FrFrancium 87[223] Group1 Melting point21°C, 70°F, 294 K Period7 Boiling point650°C, 1202°F, 923 K Blocks Density (g cm−3)Unknown Atomic number87 Relative atomic mass[223] State at 20°CSolid Key isotopes223Fr Electron configuration[Rn] 7s1 CAS number7440-73-5
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solid.......................................
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