Chemistry - Coordination Chemistry Question with Solution | TestHub

$\begin{array}{lll}& \begin{array}{l}\text{Number of unpaired e}\end{array}& \mu =\sqrt{\mathrm{n}(\mathrm{n}+2)}B.M.\\ {\left[\mathrm{Co}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}& 3& 3.87\\ {\left[\mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}& 4& 4.89\\ {\left[\mathrm{Mn}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}& 5& 5.92\\ {\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}& 4& 4.89\end{array}$ Least paramagnetic behaviour $={\left[\mathrm{Co}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}$