Chemistry - Complete d-block Question with Solution | TestHub

\begin{array}{lcc} Ions & No. of unpaired electrons & Configuration \\\mathrm{Ti}^{3+} & 1 & 3 d^1 \\\mathrm{Cr}^{2+} & 4 & 3 d^4 \\\mathrm{Mn}^{2+} & 5 & 3 d^5 \\\mathrm{Fe}^{2+} & 4 & 3 d^6 \\\mathrm{Sc}^{3+} & 0 & 3 d^0\end{array} Spin only magnetic moment is given by $\sqrt{n(n+2)}\mathrm{BM}$ $\therefore {\mathrm{Cr}}^{2+}$ and ${\mathrm{Fe}}^{2+}$ will have same spin only magnetic moment.