Co-odination compounds

Why do Mno4- and Cr2O72- show color?

2 Answers

19
Debotosh.. ·

charge transfer from oxygen atom to manganese and chromium, thereby lowering their oxidation states and making their configurations with unfulfilled d-orbitals ! ! [1] [1]

1
mentor_Adil Hayat ·

Charge transfer takes place from ligands to metal orbitals.
So, charge transfer spectra is the reason for color of these compounds.

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