In the first transition metal series, Cu exhibits +1 oxidation state very frequently because Cu has an electronic configuration of [Ar] 3d 10, that is, the completely filled d-orbital makes it highly stable configuration.
In the first transition metal series, Cu exhibits +1 oxidation state very frequently because Cu has an electronic configuration of [Ar] 3d 10, that is, the completely filled d-orbital makes it highly stable configuration.