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    Fe

    Iron

    Transition Metal

    Atomic Number: 26 • Atomic Mass: 55.8450 u • Period: 4 • Group: 8

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
    Phase: Solid
    Electronegativity: 1.83
    Manganese (Mn)Cobalt (Co)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    History

    Iron has been known since ancient times

    Historical Timeline

    One of the first metals used by humans, dating back to ancient Egypt and Mesopotamia

    Iron Age began around 1200 BCE, following the Bronze Age

    First iron smelting dates to around 3000 BCE in the Middle East and India