The $\mathrm{Ti}^{3+}$ ion has an electron configuration of $3 \mathrm{d}^{1}$, meaning it has one electron in the d orbital. On the other hand, the $\mathrm{Sc}^{3+}$ ion has an electron configuration of $3 \mathrm{d}^{0}$, meaning it has no electrons in the d
Show more…
