Back to Elements
    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

    Overview

    Bromine is the chemical element with the symbol Br and atomic number 35. It belongs to the Halogen group and is located in period 4 of the periodic table. It exists as a liquid under standard conditions.

    Basic Information

    • Symbol:Br
    • Atomic Number:35
    • Atomic Mass:79.9040 u
    • Group:17
    • Period:4
    • Category:Halogen
    • Phase at STP:Liquid
    • Electronegativity:2.96 (Pauling scale)

    Key Facts

    Fun Fact #1

    Only non-metal liquid at room temperature

    Fun Fact #2

    Has a strong, irritating odor

    Common Uses

    • Flame retardants
    • Pesticides
    • Pharmaceuticals