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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)
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    Physical & Chemical Properties

    Physical Properties

    • •Colorless, odorless, tasteless gas
    • •Slightly lighter than air
    • •Low solubility in water
    • •Becomes liquid at very low temperatures
    Melting Point

    63.15 K (-210.00 °C, -346.00 °F)

    Boiling Point

    77.36 K (-195.79 °C, -320.42 °F)

    Density

    0.001251 g/cm³

    Electronegativity

    3.04 (Pauling scale)

    Chemical Properties

    • •Relatively inert at room temperature due to strong triple bond
    • •Forms many oxides with different properties
    • •Key component of amino acids and nucleic acids
    • •Can form compounds in all oxidation states from -3 to +5

    Electron Configuration

    1s² 2s² 2p³

    Electron configuration describes how electrons are distributed in atomic orbitals, showing how they are arranged in energy levels and subshells.