## Indium |

Symbol | In |
---|---|

Latin name | Indium |

Atomic number | 49 |

Period | 5 |

Element category | Metals |

Relative atomic mass | 114.82 |

Group | III.A |

Electronegativity | 1.7 |

Oxidation numbers | 1, 3 |

Electron configuration | 1s ^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 3d^{10} 4s^{2} 4p^{6} 4d^{10} 5s^{2} 5p^{1} |

Density [g/cm^{3}] | 7.31 |

State | Solid |

Melting point [°C] | 156.63 |

Boiling point [°C] | 2080 |

Atomic radius [pm] | 156 |

Covalent radius [pm] | 144 |

Thermal conductivity [W m^{-1}K^{-1}] | 81.6 |

Heat capacity [J K^{-1}g^{-1}] | 0.233 |

Discovery | 1863 |

Hardness [Mohs scale] | 1.2 |

Young's modulus [GPa] | 11 |

Electrical conductivity [S m^{-1}] | 3.4 · 10 ^{6} |

1.st ionization energy [eV] | 5.7864 |

2.nd ionization energy [eV] | 18.869 |

3.rd ionization energy [eV] | 28.03 |

Stable isotopes | 2 |

Unstable isotopes | 32 |