PERIODIC ELEMENT
Mg (Magnesium)

 



Atomic number : 12
Atomic mass : 24.305 g.mol-1
Electronegativity according to Pauling : 1.2
Density : 1.74 g.cm-3 at 20 °C
Melting point : 650 °C
Boiling point : 1107 °C
Vanderwaals radius : 0.16 nm
Ionic radius : 0.065 nm
Isotopes : 5
Electronic shell : [Ne] 3s2
Energy of first ionisation : 737.5 KJ.mol-1
Energy of second ionisation : 1450 KJ.mol-1
Standard potential : - 2.34 V
Discovered by : Sir Humphrey Davy in 1808
 
Atomic Structure Uses (airplanes, missiles)