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    N

    Nitrogen

    Nonmetal

    Atomic Number: 7 • Atomic Mass: 14.0070 u • Period: 2 • Group: 15

    Electron Configuration: 1s² 2s² 2p³
    Phase: Gas
    Electronegativity: 3.04
    Carbon (C)Oxygen (O)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    Occurrence

    Nitrogen is found in various natural sources, including minerals, rocks, and the Earth's crust.

    • Constitutes about 78% of Earth's atmosphere
    • Present in all living organisms in proteins, DNA, and RNA
    • Found in minerals as nitrates and ammonium compounds
    • Seventh most abundant element in the Milky Way galaxy