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

The correct order of magnetic moments (spin only values in B.M.) among is
  1. $\left[\mathrm{MnCl}_4\right]^{2-}>\left[\mathrm{CoCl}_4\right]^{-2}>\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{-4}$
  2. $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{-4}>\left[\mathrm{CoCl}_4\right]^{2-}>\left[\mathrm{MnCl}_4\right]^{2-}$
  3. $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}>\left[\mathrm{MnCl}_4\right]^{2-}>\left[\mathrm{CoCl}_4\right]^{2-}$
  4. $\left[\mathrm{MnCl}_4\right]^{2^{-}}>\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}>\left[\mathrm{CoCl}_4\right]^{2-}$ (Atomic numbers: $\mathrm{Mn}=25 ; \mathrm{Fe}=26, \mathrm{Co}=27$ )

Solution

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Asked in: JEE Main 2004

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