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    Os

    Osmium

    Transition Metal

    Atomic Number: 76 • Atomic Mass: 190.2300 u • Period: 6 • Group: 8

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d⁶
    Phase: Solid
    Electronegativity: 2.2
    Rhenium (Re)Iridium (Ir)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    Overview

    Osmium is the chemical element with the symbol Os and atomic number 76. It belongs to the Transition Metal group and is located in period 6 of the periodic table. It exists as a solid under standard conditions.

    Basic Information

    • Symbol:Os
    • Atomic Number:76
    • Atomic Mass:190.2300 u
    • Group:8
    • Period:6
    • Category:Transition Metal
    • Phase at STP:Solid
    • Electronegativity:2.2 (Pauling scale)

    Key Facts

    Fun Fact #1

    Densest naturally occurring element

    Fun Fact #2

    Blue-gray metal with bluish tinge

    Common Uses

    • Electrical contacts
    • Fountain pen tips
    • Instrument pivots