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    Na

    Sodium

    Alkali Metal

    Atomic Number: 11 • Atomic Mass: 22.9900 u • Period: 3 • Group: 1

    Electron Configuration: 1s² 2s² 2p⁶ 3s¹
    Phase: Solid
    Electronegativity: 0.93
    Neon (Ne)Magnesium (Mg)
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    Occurrence

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

    • Sixth most abundant element in Earth's crust (2.6%)
    • Never found as free element in nature due to high reactivity
    • Common in seawater as sodium chloride
    • Present in many minerals like halite (rock salt)