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    Cr

    Chromium

    Transition Metal

    Atomic Number: 24 • Atomic Mass: 51.9960 u • Period: 4 • Group: 6

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵
    Phase: Solid
    Electronegativity: 1.66
    Vanadium (V)Manganese (Mn)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    Occurrence

    Chromium is found in various natural sources, including minerals, rocks, and the Earth's crust.

    • 21st most abundant element in Earth's crust (0.014%)
    • Found mainly in chromite ore (FeCr₂O₄)
    • Does not occur as a free metal in nature
    • Minor component in gems like ruby and emerald (gives red color)
    • Present in some meteorites