Among VO_2^{+},MnO_4^{-} and Cr_2O_7^{2-},the | vedclass

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(B) The oxidizing ability of these oxoanions depends on the oxidation state and the stability of the lower oxidation states of the central metal atom.

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(B) The oxidizing ability of these oxoanions depends on the oxidation state and the stability of the lower oxidation states of the central metal atom. The order of oxidizing power is $VO_2^{+} Thus,$VO_2^{+}$ has the least oxidizing ability.In $VO_2^{+}$,the oxidation state of $V$ is $+5$.The electronic configuration of $V$ $(Z=23)$ is $[Ar] 3d^3 4s^2$.For $V^{+5}$,the configuration is $[Ar] 3d^0 4s^0$.Since there are no unpaired electrons $(n=0)$,the spin-only magnetic moment $\mu = \sqrt{n(n+2)} = \sqrt{0(0+2)} = 0 \ BM$.

Among $VO_2^{+}$,$MnO_4^{-}$ and $Cr_2O_7^{2-}$,the spin-only magnetic moment value of the species with least oxidising ability is $BM$ (Nearest integer). (Given atomic number $V=23$,$Mn=25$,$Cr=24$)

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