Question

Which metal in the first series of transition metals exhibits +1 oxidation state most frequently and why?

Answer 1

The Electronic configuration of the Cu = [Ar].

When Cu atom loses one electron, it exhibits the +1 oxidation state in the first transition series very frequently.

As the Cu (+1) has the electronic configuration of the [Ar] 3d10, this phenomenon is occurred.

The fully filled d-orbital can make the atom highly stable.

Answer 2

Electronic configuration of Cu = [Ar] . When copper atom loses 1 electron, it exhibits +1 oxidation state and forms $Cu^{+}$ ion with stable $3{{d}^{10}}$ configuration. So, copper metal in the first transition series tends to have +1 oxidation state to achieve a stable configuration.