PERIODIC ELEMENT
Ga (Gallium)

 



Atomic number : 31
Atomic mass : 69.72 g.mol-1
Electronegativity according to Pauling : unknown
Density : 5.1 g.cm-3 at 20 °C
Melting point : 29.8 °C
Boiling point : 2204 °C
Vanderwaals radius : 0.161 nm
Ionic radius : 0.083 (+3) nm
Isotopes : 6
Electronic shell : [Ar] 3d10 4s2 4p1
Energy of first ionisation : 578.6 kJ.mol-1
Energy of second ionisation : 1978 KJ.mol-1
Energy of third ionisation : 2389 KJ.mol-1
Energy of fourth ionisation : 2962.3 KJ.mol-1
Standard potential : - 0.52 V
Discovered by : Paul Emile Lecoq de Boisbaudran in 1875
 
Atomic Structure Uses (semiconductor production)