PERIODIC ELEMENT
Pb (Lead)

 



Atomic number : 82
Atomic mass : 207.2 g.mol-1
Electronegativity according to Pauling : 1.8
Density : 11.34 g.cm-3 at 20 °C
Melting point : 327 °C
Boiling point : 1755 °C
Vanderwaals radius : 0.154 nm
Ionic radius : 0.132 nm (+2) ; 0.084 nm (+4)
Isotopes : 13
Electronic shell : [Xe] 4f14 5d10 6s2 6p2
Energy of first ionisation : 715.4 kJ.mol-1
Energy of second ionisation : 1450.0 KJ.mol-1
Energy of third ionisation : 3080.7 KJ.mol-1
Energy of fourth ionisation : 4082.3 KJ.mol-1
Energy of fifth ionisation : 6608 KJ.mol-1
Discovered by : The ancients
 
Atomic Structure Uses (solder and shielding against radiation, batteries)