7. A natural MnO2 mineral has a mixed valence comprised of Mn3+ and Mn4+. The elemental analysis shows the presence of Mg, K, and Mn with a mole ratio of 2:1:32. Give the average oxidation state of Mn in this mineral.
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7. A natural MnO2 mineral has a mixed valence comprised of Mn3+ and Mn4+. The elemental analysis shows the presence of Mg, K, and Mn with a mole ratio of 2:1:32. Give the average oxidation state of Mn in this mineral.