$MnO^-_4$ તીવ્ર ગુલાબી રંગનો છે, જોકે $Mn$ એ $( + 7)$ ઓક્સિડેશન અવસ્થામાં છે, તે આને કારણે છે...
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c The color in $M n O 4^{-}$ arises from an electronic transition, but it is actually not a
d-d transition, since the Mn in this compound has no d electrons. It arises from a charge transfer reaction within the molecule, in which photons promote an electron from the highest energy molecular orbital in one of the Mn-O bonds to an empty d orbital on the manganese. This promotion is equivalent to the energy of a yellow photon, so yellow light is absorbed leaving us to see purple, the complementary color.
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