Question

In Cu, can electrons in 3d band contribute to conduction?

Answer 1

you mean 3rd orbit??

Answer 2

3d, since when considering the conduction in Cu we need to focus on 4s and 3d, the outer orbitals.

Answer 3

no it dont coz there is a attraction force between nucleous and electrons.. this force is stronger 4 nearer orbits..and weaker 4 outer orbits.. thus electon(s) of outer orbit takes part in conduction process..

Answer 4

That's right. In details, how to explain that 3d orbitals cannot contribute to conduction since the band is full.