Francium

Fr Francium Alkali Metal

 

Atomic number:  87 Atomic weight:  (223.0197)
Shells:  2,8,18,32,18,8,1 Orbitals:  [Rn] 7s1
Melting point:  27°C Boiling point:  677°C
Covalent radius:  -- Å Atomic volume:  -- cm³/mol
Atomic radius:  -- Å Ionic radius:  -- Å
Electronegativity:  0.7 Oxidation states:  
1st ionization pot.:  -- V 2nd ionization pot.:  -- V
3rd ionization pot.:  -- V Specific heat:  -- J/gK
Heat of fusion:  -- kJ/mol Heat of vapor.:  -- kJ/mol
Thermal conduct.:  0.15 W/cmK Electrical conduct.:  0.03 10^6/cm ohm
Density:  -- g/cm³ Valence:  1