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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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    History

    Sodium has been known since ancient times

    Historical Timeline

    Isolated by Humphry Davy in 1807 through electrolysis of caustic soda

    Known in compounds since ancient times (salt)

    Name derived from 'soda' (sodium carbonate)