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    Indium

    Post Transition

    Atomic Number: 49 • Atomic Mass: 114.8200 u • Period: 5 • Group: 13

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p¹
    Phase: Solid
    Electronegativity: 1.78
    Cadmium (Cd)Tin (Sn)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    Occurrence

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

    • 69th most abundant element in Earth's crust (0.1 ppm)
    • Rarely found in minerals alone
    • Usually associated with zinc, iron, lead, and copper ores
    • No significant indium minerals exist
    • Present in small amounts in some tin ores