PERIODIC ELEMENT
Cu (Copper)




Atomic number : 29
Atomic mass : 63.546 g.mol-1
Electronegativity according to Pauling : 1.9
Density : 8.9 g.cm-3 at 20 °C
Melting point : 1083 °C
Boiling point : 2595 °C
Vanderwaals radius : 0.128 nm
Ionic radius : 0.096 (+1) nm ; 0.069 (+3) nm
Isotopes : 6
Electronic shell : [Ar] 3d10 4s1
Energy of first ionisation : 743.5 kJ.mol-1
Energy of second ionisation : 1946 kJ.mol-1
Standard Potential : + 0.522 V (Cu+ / Cu) ; + 0.345 V (Cu2+ / Cu)
Discovered by : The ancients
 
Atomic Structure Uses (electrical conductor, jewelry, coins, plumbing)