Question

The correct order of magnetic moments (spin only values in B.M.) is: (Atomic nos.: Mn = 25, Fe = 26, Co = 27)

• A. \([\text{Fe(CN)}_6]^{4-} > [\text{MnCl}_4]^{2-} > [\text{CoCl}_4]^{2-}\)
• B. \([\text{MnCl}_4]^{2-} > [\text{Fe(CN)}_6]^{4-} > [\text{CoCl}_4]^{2-}\)
• C. \([\text{MnCl}_4]^{2-} > [\text{CoCl}_4]^{2-} > [\text{Fe(CN)}_6]^{4-}\)
• D. \([\text{Fe(CN)}_6]^{4-} > [\text{CoCl}_4]^{2-} > [\text{MnCl}_4]^{2-}\)

Hint:

Strong ligands cause pairing and reduce magnetic moment.

Answer 1

The Correct Option is C