Coordinate compound= which of this complex are coloured 1=MnO4(pink) 2=Cr2O7'2-(orange) 3=HgI( red) 4=PbI2(yellow)

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Coordinate compound= which of this complex are coloured 1=MnO4(pink) 2=Cr2O7'2-(orange) 3=HgI( red) 4=PbI2(yellow)

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Potssium dichromate(K2Cr2O7) and potassium permangnate(KMnO4) both are coloured compounds.The purple colour KMnO4 and reddish yellow colour of K2Cr2O7 is due the charge transfer spectra.The deep purple color of the solution of KMnO4 is because-- an electron from a “oxygen lone pair” character orbital is transferred to a low lying Mn orbital and dichromate ion Cr2O72-- gives crystals of potassium dichromate reddish yellow colour.In both of compounds there is anioin-to-cation charge transfer which is also reffred to as ligand to metal charge transfer.In KMnO4 transfer occurs from oxygen anion to Mn cation and in K2Cr2O7 it is form oxygen anion to

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Coordinate compound= which of this complex are coloured 1=MnO4(pink) 2=Cr2O7'2-(orange) 3=HgI( red) 4=PbI2(yellow)

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