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Assigning Oxidation Numbers

The oxidation...

Question

The oxidation number of Mn in the product of alkaline oxidative fusion of MnO₂ is

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Solution

Reaction involved for the product of alkaline oxidative fusion of manganese dioxide

2MnO2 + 4KOH + O2 → K2MnO4 + 2H2O

Product : K₂MnO4 or MnO₄ ^2-

Thus oxidation state of Mn in MnO₄ ^2-

^{X = Mn}

^{X + 4 x (-2) = -2}

^{X = 6}

Mn exist in +6 State

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