Which of the following statements is correct?

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(A) $1$. $KMnO_4$ is intensely colored due to $L \rightarrow M$ (Ligand to Metal) charge transfer,where electrons transfer from $O^{2-}$ to $Mn^{7+}$.

Vedclass · Accepted Answer

$KMnO_4$ is violet/purple/dark pink due to $L \rightarrow M$ charge transfer.

Vedclass · Answer

(A) $1$. $KMnO_4$ is intensely colored due to $L \rightarrow M$ (Ligand to Metal) charge transfer,where electrons transfer from $O^{2-}$ to $Mn^{7+}$. This is correct.$2$. $TiF_6^{3-}$ $(d^1)$ is colored due to $d-d$ transition,and $Cu_2Cl_2$ is colorless due to $d^{10}$ configuration. This is incorrect.$3$. $AgCl$ is white (colorless) and $CrO_2Cl_2$ is colored due to charge transfer,not just polarization. This is incorrect.$4$. The crystal field splitting energy $\Delta_o$ for $NH_3$ is greater than $H_2O$. Since $E = hc/\lambda$,a higher $\Delta_o$ corresponds to a lower $\lambda$. Thus,$[Co(H_2O)_6]^{2+}$ absorbs at a higher $\lambda$ than $[Co(NH_3)_6]^{2+}$. This is correct.Note: Both $A$ and $D$ are scientifically correct statements.

List-$I$	List-$II$
$I$. $[Cr(CN)_6]^{4-}$	$P$. $t_{2g}$ orbitals contain $4$ electrons
$II$. $[RuCl_6]^{2-}$	$Q$. $\mu$ (spin-only) $= 4.9 \ BM$
$III$. $[Cr(H_2O)_6]^{2+}$	$R$. low spin complex ion
$IV$. $[Fe(H_2O)_6]^{2+}$	$S$. metal ion in $4+$ oxidation state
	$T$. $d^4$ species

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