PERIODIC ELEMENT
Li (Lithium)

 



Atomic number : 3
Atomic mass : 6.941 g.mol-1
Electronegativity according to Pauling : 1.0
Density : 0.53 g.cm-3 at 20 °C
Melting point : 180.5 °C
Boiling point : 1342 °C
Vanderwaals radius : 0.145 nm
Ionic radius : 0.06 nm
Isotopes : 2
Electronic shell : 1s2 2s1 or [He] 2s1
Energy of first ionisation : 520.1 kJ.mol-1
Standard potential : - 3.02 V
Discovered by : Johann Arfvedson in 1817
 
Atomic Structure Uses (batteries, ceramics, lubricants)