Silver vs Americium

PropertyAg SilverAm Americium
Atomic number4795
SymbolAgAm
NameSilverAmericium
Categorytransition-metalactinide
Standard Atomic Weight107.8682 u243 u
Period57
Group11N/A
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s14d10[Rn]7s25f7
Oxidation states[-2, -1, 0, 1, 2, 3][2, 3, 4, 5, 6, 7]
Electronegativity (Pauling)1.931.3
Electron affinity1.302 eV0.1 eV
Density1.050100e+4 kg/m³1.369000e+4 kg/m³
Melting point961.78 °C1175.85 °C
Boiling point2161.85 °C2010.85 °C
Discovery yearN/A1944