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    Br

    Bromine

    Halogen

    Atomic Number: 35 • Atomic Mass: 79.9040 u • Period: 4 • Group: 17

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁵
    Phase: Liquid
    Electronegativity: 2.96
    Selenium (Se)Krypton (Kr)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    History

    Bromine has been known since ancient times

    Historical Timeline

    Discovered in brine from salt marshes of Montpellier, France

    Independently discovered by Carl Jacob Löwig in 1825

    Named for its strong, unpleasant odor