Silver vs Thallium

PropertyAg SilverTl Thallium
Atomic number4781
SymbolAgTl
NameSilverThallium
Categorytransition-metalpost-transition-metal
Standard Atomic Weight107.8682 u204.3835 u
Period56
Group1113
Blocksp
Phase at STPsolidsolid
Electron configuration[Kr]5s14d10[Xe]6s24f145d106p1
Oxidation states[-2, -1, 0, 1, 2, 3][-5, -2, -1, 1, 2, 3]
Electronegativity (Pauling)1.931.62
Electron affinity1.302 eV0.377 eV
Density1.050100e+4 kg/m³1.180000e+4 kg/m³
Melting point961.78 °C303.85 °C
Boiling point2161.85 °C1472.85 °C
Discovery yearN/A1861