Silver vs Francium

PropertyAg SilverFr Francium
Atomic number4787
SymbolAgFr
NameSilverFrancium
Categorytransition-metalalkali-metal
Standard Atomic Weight107.8682 u223 u
Period57
Group111
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s14d10[Rn]7s1
Oxidation states[-2, -1, 0, 1, 2, 3][1]
Electronegativity (Pauling)1.930.7
Electron affinity1.302 eV0.491 eV
Density1.050100e+4 kg/m³1870 kg/m³
Melting point961.78 °C26.85 °C
Boiling point2161.85 °C-273.15 °C
Discovery yearN/A1939