1s2, 2s2, 2p6, 3s2, 3p6, 4s1, 3d10 or [Ar]3d10, 4s1
The electron configuration of copper (Cu) is Ar 3d10 4s1.
Ca 4s23d9
The electronic configuration od Cu is [Ar] 3d10 4s1 This is an exception to the aufbau principle which would predict [Ar] 3d9 4s2.
The electron configuration of Cu+1 is [Ar] 3d10 4s1. When copper loses one electron to become a +1 ion, it loses the 4s electron first, followed by one of the 3d electrons to attain a stable electron configuration.
The ground-state electron configuration for copper (Cu) using noble-gas shorthand is Ar 3d10 4s1.
There is 1 unpaired electron in Copper (Cu)
The electron configuration of copper is: [Ar]4s13d10. It isn't 4s23d9 because Cu is able to obtain a more stable electron configuration when it takes an electron from the 4s and adds it to 3d. A half filled 4s and a completely filled 3d is more stable.
The noble gas configuration of copper (Cu) is [Ar] 3d^10 4s^1. The noble gas that would be listed is argon (Ar), which has an electron configuration of 1s^2 2s^2 2p^6 3s^2 3p^6.
Cu+3 reported formally in 2007. Cu 1 e's in 4S and 10 e's in 3D Cu+3 0 e's in 4S and 8 e's in 3D LFSE suggets the existence of Cu+3.
Because copper loose electron from its penultimate outer shell
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The electron configuration for Cu using spdf notation is 1s2 2s2 2p6 3s2 3p6 3d10 4s1 4p6.