Q.
Arrange the following coordination compounds in the increasing order of magnetic moments. (Atomic numbers: $Mn =25 ; Fe =26$ )
(A) $\left[ FeF _{6}\right]^{3-}$
(B) $\left[ Fe ( CN )_{6}\right]^{3-}$
(C) $\left[ MnCl _{6}\right]^{3-}$ (high spin)
(D) $\left[ Mn ( CN )_{6}\right]^{3-}$
Solution: