Cu
Copper
Z 29 63.546 g/molTransition Metal
Nucleus
29 Protons
35 Neutrons
29 Electrons (1 Valence)
Shell distribution: K2 • L8 • M18 • N1 • O0 • P0 • Q0
Electron Configuration
Energy
7p
6d
5f
7s
6p
5d
4f
6s
5p
4d
5s
4p
3d
4s
3p
3s
2p
2s
1s
[Ar]3d104s1
Radii
Empirical
135 pm1.35 Å
Calculated
145 pm1.45 Å
Covalent
132±4 pm1.32±0.04 Å
van Der Waals
140 pm1.4 Å
Oxidation States
CommonRare
-2
-1
0
0
+1
+2
+3
+4
Crystal Structure
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Face-centered Cubic