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.

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

Similar Questions

Indicate the steps in the preparation of:
$(i)$ $K_2Cr_2O_7$ from chromite ore.
$(ii)$ $KMnO_4$ from pyrolusite ore.

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$(b)$ $2Na_2CrO_4 + 2H^+ \to Na_2Cr_2O_7 + 2Na^+ + H_2O$
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What is the composition of the alloy that exhibits the property of shape memory?

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