## Curium |

Symbol | Cm |
---|---|

Latin name | Curium |

Atomic number | 96 |

Period | 7 |

Element category | Inner transition elements |

Relative atomic mass | 247.0704 |

Group | III.B |

Oxidation numbers | 3, 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^{6} 5f^{7} 6d^{1} 7s^{2} |

Density [g/cm^{3}] | 13.55 |

State | Solid |

Melting point [°C] | 1340 |

Thermal conductivity [W m^{-1}K^{-1}] | 10 |

Discovery | 1944 |

1.st ionization energy [eV] | 6.02 |

Stable isotopes | 0 |

Unstable isotopes | 13 |