Cadmium vs Lead

← Back to Periodic Table
PropertyCd CadmiumPb Lead
Atomic number4882
SymbolCdPb
NameCadmiumLead
Categorytransition-metalpost-transition-metal
Standard Atomic Weight112.414 u207.2 u
Period56
Group1214
Blocksp
Phase at STPsolidsolid
Electron configuration[Kr]5s24d10[Xe]6s24f145d106p2
Oxidation states[-2, 1, 2][-4, -2, -1, 0, 1, 2, 3, 4]
Electronegativity (Pauling)1.692.33
Electron affinity-0.7 eV0.364 eV
Density8690 kg/m³1.134200e+4 kg/m³
Melting point321.07 °C327.46 °C
Boiling point766.85 °C1748.85 °C
Discovery year18172021