\(n=\) number of unpaired electrons
\(T_{i}^{i+3}=\text { Ar }] 3 d^{1} \quad \quad\quad n=1 \quad \quad \mu=1.73\, {BM}\)
\({V}^{+2}= \text { [Ar]3d }^{3} \quad \quad \quad {n}=3 \quad \quad \mu=3.87\, {BM}\)
\({Sc}^{+3}=[{Ar}] 3 {~d}^{0} 4 {~s}^{0} \quad \quad {n}=0 \quad \quad \mu=0\)