Copper:
1s
2
2s
2
2p
6
3s
2
3p
6
3d
10
4s
1
Select an orbital to view:
Lowest level:
1s : 2 electrons
Second level
2s : 2 electrons
2p : 6 electrons
Third level:
3s : 2 electrons
3p : 6 electrons
3d : 10 electrons
Fourth level:
4s : 1 electron