Strontium vs Lead

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PropertySr StrontiumPb Lead
Atomic number3882
SymbolSrPb
NameStrontiumLead
Categoryalkaline-earth-metalpost-transition-metal
Standard Atomic Weight87.62 u207.2 u
Period56
Group214
Blocksp
Phase at STPsolidsolid
Electron configuration[Kr]5s2[Xe]6s24f145d106p2
Oxidation states[1, 2][-4, -2, -1, 0, 1, 2, 3, 4]
Electronegativity (Pauling)0.952.33
Electron affinity0.052 eV0.364 eV
Density2640 kg/m³1.134200e+4 kg/m³
Melting point776.85 °C327.46 °C
Boiling point1381.85 °C1748.85 °C
Discovery year17922021