Technetium vs Lead

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PropertyTc TechnetiumPb Lead
Atomic number4382
SymbolTcPb
NameTechnetiumLead
Categorytransition-metalpost-transition-metal
Standard Atomic Weight98 u207.2 u
Period56
Group714
Blocksp
Phase at STPsolidsolid
Electron configuration[Kr]5s24d5[Xe]6s24f145d106p2
Oxidation states[-3, -1, 1, 2, 3, 4, 5, 6, 7][-4, -2, -1, 0, 1, 2, 3, 4]
Electronegativity (Pauling)1.92.33
Electron affinity0.55 eV0.364 eV
Density1.100000e+4 kg/m³1.134200e+4 kg/m³
Melting point2156.85 °C327.46 °C
Boiling point4264.85 °C1748.85 °C
Discovery year19372021