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    Xe

    Xenon

    Noble Gas

    Atomic Number: 54 • Atomic Mass: 131.2900 u • Period: 5 • Group: 18

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶
    Phase: Gas
    Electronegativity: 2.6
    Iodine (I)Cesium (Cs)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    Overview

    Xenon is the chemical element with the symbol Xe and atomic number 54. It belongs to the Noble Gas group and is located in period 5 of the periodic table. It exists as a gas under standard conditions.

    Basic Information

    • Symbol:Xe
    • Atomic Number:54
    • Atomic Mass:131.2900 u
    • Group:18
    • Period:5
    • Category:Noble Gas
    • Phase at STP:Gas
    • Electronegativity:2.6 (Pauling scale)

    Key Facts

    Fun Fact #1

    First noble gas known to form compounds

    Fun Fact #2

    Name comes from Greek 'xenos' meaning 'stranger'

    Common Uses

    • Lighting
    • Medical imaging
    • Ion propulsion systems