1.

The correct order of magentic moments (spin only values is B.M ) among is

Answer»

`[Fe(CN)_(6)]^(4-) gt [MnCl_4]^(2-) gt [CoCl_(4)]^(2-)`
`[MnCl_(4)]^(2-) gt [Fe(CN)_6]^(4-) gt [CoCl_(4)]^(2-)`
`[MnCl_(4)]^(2-) gt [CoCl_(4)]^(2-) gt [Fe (CN)_(6)]^(4-)`
`[Fe(CN)_(6)]^(4-) gt [CoCl_(4)]^(2) gt [MnCl_(4)]^(2-)`

Solution :
no fo UNPAIRED ELECTRON =3
The greater the number of unpaired electrons, greater the magnitude of magnetic moment. Hence the CORRECT order will be
`[MnCl_(4)]^(2-) gt [CoCl_4]^(2-) gt [Fe (CN)_6]^(4-)`


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