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    Zr

    Zirconium

    Transition Metal

    Atomic Number: 40 • Atomic Mass: 91.2240 u • Period: 5 • Group: 4

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d²
    Phase: Solid
    Electronegativity: 1.33
    Yttrium (Y)Niobium (Nb)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    History

    Zirconium has been known since ancient times

    Historical Timeline

    Discovered in the mineral zirconia (zirconium dioxide)

    First isolated as an impure metal by Jöns Jakob Berzelius in 1824

    Pure zirconium first produced in 1925 by Anton Eduard van Arkel and Jan Hendrik de Boer