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    Cu

    Copper

    Transition Metal

    Atomic Number: 29 • Atomic Mass: 63.5460 u • Period: 4 • Group: 11

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d¹⁰
    Phase: Solid
    Electronegativity: 1.9
    Nickel (Ni)Zinc (Zn)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    History

    Copper has been known since ancient times

    Historical Timeline

    One of the earliest metals used by humans, dating back to around 9000 BCE

    Enabled the Bronze Age when alloyed with tin (3300-1200 BCE)

    Major source in ancient world was mines in Cyprus, giving copper its name