Which of the following compounds has colour but no unpaired electrons? – InterviewSolution

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1.	Which of the following compounds has colour but no unpaired electrons?
Answer» `KMnO_(4)` `K_(2)MnO_(4)` `MnSO_(4)` `MnCl_(2)` Solution :Electronic configuration of `Mn` is `[AR]3d^(5)4s^(2)`. Being TRANSITION metal it bas 7 valence electrons and all are involved in bond formation in `MnO_(4)^(-)`. Hence it has no unpaired electron.

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