## 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 | 1s ^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 3d^{10} 4s^{2} 4p^{6} 4d^{10} 5s^{2} 5p^{6} 4f^{14} 5d^{10} 6s^{2} 6p^{2} |

Density [g/cm^{3}] | 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^{-1}K^{-1}] | 35.3 |

Heat capacity [J K^{-1}g^{-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 · 10 ^{6} |

Electrical resistivity [10^{-6}Ω.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 |