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    Og

    Oganesson

    Noble Gas

    Atomic Number: 118 • Atomic Mass: 294.0000 u • Period: 7 • Group: 18

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d¹⁰ 7p⁶
    Phase: Solid
    Electronegativity: 2
    Tennessine (Ts)
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    Physical & Chemical Properties

    Physical Properties

    • •Predicted to be a solid at room temperature unlike other noble gases
    • •Expected to have significantly different properties than other noble gases
    • •May be significantly reactive due to relativistic effects
    Melting Point

    325 K (51.85 °C, 125.33 °F)

    Boiling Point

    450 K (176.85 °C, 350.33 °F)

    Density

    5 g/cm³

    Electronegativity

    2 (Pauling scale)

    Chemical Properties

    • •May not be chemically inert like other noble gases
    • •Relativistic effects likely cause valence electrons to be more available for bonding
    • •Theoretical calculations suggest possible metallic properties

    Electron Configuration

    1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d¹⁰ 7p⁶

    Electron configuration describes how electrons are distributed in atomic orbitals, showing how they are arranged in energy levels and subshells.