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General Properties
Name, symbol, numberlead, Pb, 82
Chemical seriesd-blok elementi
Group, Period, Block14, 6, p
Standard atomic weight207.2(1) g·mol-1
Electron configuration[Xenon] 4f14 5d10 6s² 6p²
Electrons per shell2, 8, 18, 32, 18, 4
Physical properties
Phasesolid
Density (near room temp.)11.34 g·cm-3
Liquid melting point.10.66 g·cm-3
Melting point600.61 K
(327.46 °C, 621.43 °F)
Boiling point2022 K
(1749 °C, 3180 °F)
Heat of fusion4.77 kJ·mol-1
Heat of vaporization179.5 kJ·mol-1
Heat capacity(25 °C) 26.650 J·mol-1·K-1
Miscellaneous
Magnetic orderingdiamagnetic
Electrical resistivity(20 °C) 208 n ?·m
Thermal conductivity(300 K) 35.3 W·m-1·K-1
Thermal expansion(25 °C) 28.9 µm·m-1·K-1
Speed of sound (thin rod)(room temp.) (annealed)
1190 m·s-1
Young's modulus16 GPa
Shear modulus5.6 GPa
Bulk modulus46 GPa
Poisson ratio0.44
Mohs hardness1.5
Brinell hardness38.3 MPa
CAS registry number7439-92-1