Assertion : [Fe(CN)_6]^{3-} is weakly paramag | vedclass

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(B) In $[Fe(CN)_6]^{3-}$,$Fe$ is in $+3$ oxidation state ($3d^5$ configuration). Due to the strong field ligand $CN^-$,the electrons pair up,leaving $

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If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

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(B) In $[Fe(CN)_6]^{3-}$,$Fe$ is in $+3$ oxidation state ($3d^5$ configuration). Due to the strong field ligand $CN^-$,the electrons pair up,leaving $1$ unpaired electron,making it paramagnetic.In $[Fe(CN)_6]^{4-}$,$Fe$ is in $+2$ oxidation state ($3d^6$ configuration). Due to the strong field ligand $CN^-$,all $6$ electrons pair up in the $t_{2g}$ orbitals,leaving $0$ unpaired electrons,making it diamagnetic.Both statements are true,but the magnetic property depends on the number of unpaired electrons resulting from the crystal field splitting and the nature of the ligand,not just the oxidation state. Thus,the Reason is not the correct explanation of the Assertion.

List-$I$ (Complex)	List-$II$ (Type of isomerism)
$A$. $[Co(NH_3)_5(NO_2)]Cl_2$	$I$. Solvate isomerism
$B$. $[Co(NH_3)_5(SO_4)]Br$	$II$. Linkage isomerism
$C$. $[Co(NH_3)_6][Cr(CN)_6]$	$III$. Ionization isomerism
$D$. $[Co(H_2O)_6]Cl_3$	$IV$. Coordination isomerism

Assertion : $[Fe(CN)_6]^{3-}$ is weakly paramagnetic while $[Fe(CN)_6]^{4-}$ is diamagnetic.
Reason : $[Fe(CN)_6]^{3-}$ has $+3$ oxidation state while $[Fe(CN)_6]^{4-}$ has $+2$ oxidation state.

Similar Questions

The metal complex that is diamagnetic is (Atomic number: $Fe = 26, Cu = 29$)

The magnetic moments of the complexes given below are in the order:
$I. [Ni(CO)_4]$
$II. [Mn(CN)_6]^{4-}$
$III. [Cr(NH_3)_6]^{3+}$
$IV. [CoF_6]^{3-}$

Which of the following complex species is not expected to exhibit optical isomerism? $(en = \text{ethylenediamine})$

The magnetic moment (spin-only) of $[NiCl_4]^{2-}$ is ........ $B.M.$

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Assertion : $[Fe(CN)_6]^{3-}$ is weakly paramagnetic while $[Fe(CN)_6]^{4-}$ is diamagnetic.Reason : $[Fe(CN)_6]^{3-}$ has $+3$ oxidation state while $[Fe(CN)_6]^{4-}$ has $+2$ oxidation state.