Copper
Atom properties
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Radii
Van der Waals atomic radius (pm):
140 [11]
Empirical atomic radius (pm):
135 [11]
Covalent atomic radius (pm):
132(4) [11]
Ionic radius (Å):
Cu(III): 0.54 (6-coordinate) [2]
Cu(II): 0.73 (6-coordinate) [2]
Cu(I): 0.77 (6-coordinate) [2]
Electronegativity
Pauling Scale:
1.9 [11]
Allen Scale:
1.85 [11]
Electron binding forces
Electron Affinity (eV):
1.228 [11]
Ionization Energy (eV):
7.726 [11]
Electron configuration
Ground state:
1s
2
-2s
2
-2p
6
-3s
2
-3p
6
-3d
10
-4s
1
[11]
