Zirconium vs Lead

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PropertyZr ZirconiumPb Lead
Atomic number4082
SymbolZrPb
NameZirconiumLead
Categorytransition-metalpost-transition-metal
Standard Atomic Weight91.224 u207.2 u
Period56
Group414
Blocksp
Phase at STPsolidsolid
Electron configuration[Kr]5s24d2[Xe]6s24f145d106p2
Oxidation states[1, 2, 3, 4][-4, -2, -1, 0, 1, 2, 3, 4]
Electronegativity (Pauling)1.332.33
Electron affinity0.426 eV0.364 eV
Density6520 kg/m³1.134200e+4 kg/m³
Melting point1854.85 °C327.46 °C
Boiling point4408.85 °C1748.85 °C
Discovery year17892021