Chemistry

Problem

Which electron configuration represents the ground state of the

\text{V}^{2+}

ion? a)

[\text{Ar}]\,4s^{1}\,3d^{3}

[\text{Ar}]\,3d^{3}

[\text{Ar}]\,4s^{2}\,3d^{1}

[\text{Ar}]\,3d^{4}