Atomic Number29Molar Mass63.55 gmol-1
Electron Configuration[Ar]3d104s1Normal Statesolid metal
Density @STP8.93 g cm-3Melting Point1084oC
Boiling Point2562oCStable Isotopes63Cu, 65Cu
Atomic Radius128 pmIonic Radius72 (2+) pm
Electronegativity (Pauling)1.9Ionization Energy (1st)745 kJ mol-1
Ionization Energy (2nd)1958 kJ mol-1Ionization Energy (3rd)3554 kJ mol-1
Molar Heat Capacity24.4 J K-1mol-1Standard Molar Entropy33.2 J K-1mol-1
Enthalpy of Fusion13 kJ mol-1Enthalpy of Vapourization304.6 kJ mol-1
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