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    Rn

    Radon

    Noble Gas

    Atomic Number: 86 • Atomic Mass: 222.0000 u • Period: 6 • Group: 18

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶
    Phase: Gas
    Electronegativity: 2.2
    Astatine (At)Francium (Fr)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    Overview

    Radon is the chemical element with the symbol Rn and atomic number 86. It belongs to the Noble Gas group and is located in period 6 of the periodic table. It exists as a gas under standard conditions.

    Basic Information

    • Symbol:Rn
    • Atomic Number:86
    • Atomic Mass:222.0000 u
    • Group:18
    • Period:6
    • Category:Noble Gas
    • Phase at STP:Gas
    • Electronegativity:2.2 (Pauling scale)

    Key Facts

    Fun Fact #1

    Heaviest noble gas

    Fun Fact #2

    Causes thousands of lung cancer deaths yearly

    Common Uses

    • Cancer treatment
    • Radon testing
    • Earthquake prediction research