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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)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    History

    Oganesson has been known since ancient times

    Historical Timeline

    First synthesized in 2002 in Dubna, Russia

    Confirmed in 2006 by repeated experiments

    Officially named in 2016 by IUPAC