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The correct order of spin only magnetic moments for the following complex ions is

1. [Fe(CN) 6 ] 3– < [CoF 6 ] 3– < [MnBr 4 ] 2– < [Mn(CN) 6 ] 3–
2. [CoF 6 ] 3– < [MnBr 4 ] 2– < [Fe(CN) 6 ] 3– < [Mn(CN) 6 ] 3–
3. [Fe(CN) 6 ] 3– < [Mn(CN) 6 ] 3– < [CoF 6 ] 3– < [MnBr 4 ] 2–
4. [MnBr 4 ] 2– < [CoF 6 ] 3– < [Fe(CN) 6 ] 3– < [Mn(CN) 6 ] 3–

Correct answer: [Fe(CN) 6 ] 3– < [Mn(CN) 6 ] 3– < [CoF 6 ] 3– < [MnBr 4 ] 2–

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