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    Cd

    Cadmium

    Transition Metal

    Atomic Number: 48 • Atomic Mass: 112.4100 u • Period: 5 • Group: 12

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰
    Phase: Solid
    Electronegativity: 1.69
    Silver (Ag)Indium (In)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    History

    Cadmium has been known since ancient times

    Historical Timeline

    Discovered by German chemist Friedrich Stromeyer

    Found as an impurity in zinc carbonate (calamine)

    Named after cadmia, the ancient name for zinc ore