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    Tb

    Terbium

    Lanthanide

    Atomic Number: 65 • Atomic Mass: 158.9300 u • Period: 6 • Group: 101

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f⁹
    Phase: Solid
    Electronegativity: 1.2
    Gadolinium (Gd)Dysprosium (Dy)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    History

    Terbium has been known since ancient times

    Historical Timeline

    Extracted from yttrium mineral

    Pure metal isolated in early 1900s