Silver vs Osmium

PropertyAg SilverOs Osmium
Atomic number4776
SymbolAgOs
NameSilverOsmium
Categorytransition-metaltransition-metal
Standard Atomic Weight107.8682 u190.23 u
Period56
Group118
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s14d10[Xe]6s24f145d6
Oxidation states[-2, -1, 0, 1, 2, 3][-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8]
Electronegativity (Pauling)1.932.2
Electron affinity1.302 eV1.1 eV
Density1.050100e+4 kg/m³2.258720e+4 kg/m³
Melting point961.78 °C3032.85 °C
Boiling point2161.85 °C5011.85 °C
Discovery yearN/A1803