Which of the following orders is correct for | vedclass

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(C) The standard electrode potential $(E^{\circ})$ for $M^{3+}/M^{2+}$ follows the order $Mn^{3+}/Mn^{2+} > Fe^{3+}/Fe^{2+} > Cr^{3+}/Cr^{2+}$. Thus,o

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$VO_2^{+} < Cr_2O_7^{2-} < MnO_4^{-}$ - oxidizing power

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(C) The standard electrode potential $(E^{\circ})$ for $M^{3+}/M^{2+}$ follows the order $Mn^{3+}/Mn^{2+} > Fe^{3+}/Fe^{2+} > Cr^{3+}/Cr^{2+}$. Thus,option $A$ is incorrect.Magnetic moment is calculated as $\mu = \sqrt{n(n+2)}$,where $n$ is the number of unpaired electrons.For $Mn^{2+}$ $(3d^5)$,$n=5$. For $Cr^{2+}$ $(3d^4)$,$n=4$. For $Fe^{2+}$ $(3d^6)$,$n=4$. The order is $Mn^{2+} > Cr^{2+} \approx Fe^{2+}$. Thus,option $B$ is incorrect.Oxidizing power depends on the reduction potential and the stability of the lower oxidation state. $MnO_4^-$ $(Mn^{+7})$ is a stronger oxidizing agent than $Cr_2O_7^{2-}$ $(Cr^{+6})$ and $VO_2^+$ $(V^{+5})$. The correct order is $VO_2^+ First ionization enthalpy generally increases across the period but shows irregularities due to electronic configuration. The order is $Ti < V < Cr$ is incorrect; the correct order is $Ti < V < Cr$ is not followed due to stability of half-filled $d$-orbitals in $Cr$.

Column-$I$	Column-$II$
$(1)$ General electronic configuration of $d$-block elements	$(A)$ Transition elements
$(2)$ $d$-block elements	$(B)$ $(n-1)d^{1-10}ns^{1-2}$
$(3)$ Groups $3$ to $12$	$(C)$ $Z = 58$ to $71$
$(4)$ Lanthanoid elements	$(D)$ Last electron enters $d$-orbital

Which of the following orders is correct for the property given?

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Which of the following orders is correct?

Statement $(I)$ $Co^{2+}$ has a higher magnetic moment than $Cr^{3+}$.
Statement $(II)$ Ionisation enthalpies of $Ce$,$Pr$ and $Nd$ are higher than $Th$,$Pa$ and $U$.
Which of the following is correct?

The number of statement$(s)$ correct from the following for copper (atomic number $29$) is/are $...$
$(A) \ Cu(II)$ complexes are always paramagnetic
$(B) \ Cu(I)$ complexes are generally colourless
$(C) \ Cu(I)$ is easily oxidized
$(D)$ In Fehling solution,the active reagent has $Cu(II)$

Which of the following is not arranged in the correct sequence?

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