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    Li

    Lithium

    Alkali Metal

    Atomic Number: 3 • Atomic Mass: 6.9400 u • Period: 2 • Group: 1

    Electron Configuration: 1s² 2s¹
    Phase: Solid
    Electronegativity: 0.98
    Helium (He)Beryllium (Be)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    History

    Lithium has been known since ancient times

    Historical Timeline

    Discovered in 1817 by Johan August Arfwedson in petalite ore

    Isolated in pure form by William Thomas Brande and Humphry Davy

    Named after the Greek word for stone due to its discovery in rock material