$\ce{KMnO4}$ is coloured due to charge transfer spectra. As Mn doesn't have any electrons, it shouldn't be magnetic. But, according to the magnetic susceptibility value given on Wikipedia, it comes out to be paramagnetic. How is it possible?

  • $\begingroup$ Welcome onnnthe ChemSE! Mn has a lot of electrons, about 30. I suggest to clarify this part :-) $\endgroup$
    – peterh
    Sep 12, 2020 at 6:58
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    $\begingroup$ @Cde124AB_ You may mean all Valence electrons are invokved in bonding and there is none left to be unpaired. It may need MO point of view. Even O2 does not seem to be paramagnetic by simple valence electrons inventory. $\endgroup$
    – Poutnik
    Sep 12, 2020 at 7:09
  • $\begingroup$ Good question. Please see my comment at chemistry.stackexchange.com/questions/115841/… If I have time I will turn that into an answer. The reason is not trivial. $\endgroup$
    – Ian Bush
    Sep 12, 2020 at 18:20


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