Back to Elements
    Pr

    Praseodymium

    Lanthanide

    Atomic Number: 59 • Atomic Mass: 140.9100 u • Period: 6 • Group: 101

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f³
    Phase: Solid
    Electronegativity: 1.13
    Cerium (Ce)Neodymium (Nd)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    History

    Praseodymium has been known since ancient times

    Historical Timeline

    Separated from neodymium

    Identified as a distinct element from cerium