The electronic configuration of the valence shell of Cu is 3d10 4s1 and not 3d94s2. How is this configuration explained? - India Site

The electronic configuration of the valence shell of Cu is 3d10 4s1 and not 3d94s2. How is this configuration explained?

Chemistry | Class 11 | Exercise 1 | NCERT | Structure of Atom

The electronic configuration of the valence shell of Cu is 3d10 4s1 and not 3d94s2. How is this configuration explained?

Great stability is established to the orbitals which are half or completely filled. In the given electronic configuration 3d104s1 of Copper (Cu), the stability is assured (d orbitals – filled, s orbitals – half-filled).

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