\([\overset{-1}{\mathop{Mn}}\,{{(CO)}_{4}}(N{{O}^{+}})]:\) No unpaired \(e^-\) either on ligands or on \(\overset{-1}{\mathop{Mn}}\) hence it is diamagnetic
$(a)$ રીડ્યુસીંગ
$(b)$ ઓક્સીડાઇજિગ
$(c)$ સંકીર્ણતા
$(i)$ $\left[ FeF _{6}\right]^{3-}$
$(ii)$ $\left[ Co \left( NH _{3}\right)_{6}\right]^{3+}$
$(iii)$ $\left[ NiCl _{4}\right]^{2-}$
$(iv)$ $\left[ Cu \left( NH _{3}\right)_{4}\right]^{2+}$