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    P

    Phosphorus

    Nonmetal

    Atomic Number: 15 • Atomic Mass: 30.9740 u • Period: 3 • Group: 15

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p³
    Phase: Solid
    Electronegativity: 2.19
    Silicon (Si)Sulfur (S)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    Overview

    Phosphorus is the chemical element with the symbol P and atomic number 15. It belongs to the Nonmetal group and is located in period 3 of the periodic table. It exists as a solid under standard conditions.

    Basic Information

    • Symbol:P
    • Atomic Number:15
    • Atomic Mass:30.9740 u
    • Group:15
    • Period:3
    • Category:Nonmetal
    • Phase at STP:Solid
    • Electronegativity:2.19 (Pauling scale)

    Key Facts

    Fun Fact #1

    Glows in the dark

    Fun Fact #2

    Essential component of DNA and RNA

    Common Uses

    • Fertilizers
    • Detergents
    • Matches