The purple colour of KMnO_4 is due to the tra | vedclass

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(A) In $KMnO_4$,Manganese $(Mn)$ is in the $+7$ oxidation state with a $d^0$ electronic configuration.Since there are no $d$ electrons,$d-d$ transitio

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$C.T. (L 	o M)$

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(A) In $KMnO_4$,Manganese $(Mn)$ is in the $+7$ oxidation state with a $d^0$ electronic configuration.Since there are no $d$ electrons,$d-d$ transitions are not possible.The intense purple color arises from Ligand-to-Metal Charge Transfer $(LMCT)$,where an electron is promoted from the $O^{2-}$ ligand to the empty $d$-orbitals of the $Mn^{7+}$ center.Therefore,the transition is $L 	o M$ charge transfer.

List-$I$ (Aqueous solution of salt)	List-$II$ (Color)
$A$. $FeSO_4 \cdot 7H_2O$	$i$. Green
$B$. $NiCl_2 \cdot 4H_2O$	$ii$. Pale pink
$C$. $MnCl_2 \cdot 4H_2O$	$iii$. Blue
$D$. $CoCl_2 \cdot 6H_2O$	$iv$. Light green
$E$. $Cu_2Cl_2$	$v$. Pink
	$vi$. Colorless

The purple colour of $KMnO_4$ is due to the transition:

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