Atomic Number 3     Atomic Mass 6.941     Density 0.534 g/mL

State solid     Color silvery white     Electronegativity 0.98

Melting Point 180.54°C     Boiling Point 1342°C

Natural Isotopes Li-6 7.5%   Li-7 92.5%

Abbreviated Electron Configuration [He] 2s¹

Discovered by Johann Arfvedson in 1817.