Which of the following compounds is diamagnet | vedclass

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(D) $K_4[Fe(CN)_5(O_2)]$ contains the superoxide ion $O_2^-$,which has an unpaired electron,making it paramagnetic. In $[NiF_6]^{2-}$,$Ni$ is in the $

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None of these

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(D) $K_4[Fe(CN)_5(O_2)]$ contains the superoxide ion $O_2^-$,which has an unpaired electron,making it paramagnetic. In $[NiF_6]^{2-}$,$Ni$ is in the $+4$ oxidation state ($d^6$ configuration). With $F^-$ as a weak field ligand,the electrons remain unpaired,making it paramagnetic. In $[Fe(H_2O)_5(NO)]^{2+}$,$Fe$ is in the $+1$ oxidation state $(d^7)$ and $NO$ is $NO^+$. This complex is known to be paramagnetic due to the presence of unpaired electrons. Therefore,none of the given complexes are diamagnetic.

Which of the following compounds is diamagnetic?

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