PERIODIC ELEMENT
F (Fluorine)

 



Atomic number : 9
Atomic mass : 15.998403 g.mol-1
Electronegativity according to Pauling : 4
Density : 1.8*10*3g.cm3 at 20 °C
Melting point : -219.6 °C
Boiling point : -188 °C
Vanderwaals radius : 0.135 nm
Ionic radius : 0.136 nm (-1) ; 0.007 (+7)
Isotopes : 2
Electronic shell : [He] 2s22p5
Energy of first ionisation : 1680.6 kJ.mol-1
Energy of second ionisation : 3134 kJ.mol-1
Energy of third ionisation : 6050 kJ.mol-1
Standard potential : -2.87 V
Discovered by : Moissan in 1886
 
Atomic Structure Uses (Refrigerants, Tooth paste)