Lead

Symbol | Pb
Latin name | Plumbum
Atomic number | 82
Period | 6
Element category | Metals
Relative atomic mass | 207.2
Group | IV.A
Electronegativity | 1.8
Oxidation numbers | 2, 4
Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p2
Density [g/cm3] | 11.35
State | Solid
Melting point [°C] | 323.50
Boiling point [°C] | 1740
Atomic radius [pm] | 154
Covalent radius [pm] | 147
Thermal conductivity [W m-1K-1] | 35.3
Heat capacity [J K-1g-1] | 0.129
Discovery | Antiquity
Hardness [Mohs scale] | 1.5
Brinell hardness [MPa] | 38.3
Young's modulus [GPa] | 16
Electrical conductivity [S m-1] | 4.8 · 106
Electrical resistivity [10-6Ω.m] | 0.206
Shear modulus [GPa] | 5.6
1.st ionization energy [eV] | 7.4167
2.nd ionization energy [eV] | 15.028
3.rd ionization energy [eV] | 31.943
Stable isotopes | 4
Unstable isotopes | 24