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JEE Advanced2009Chemistryd and f Block ElementsActual

The oxidation number of Mn in the product of alkaline oxidative fusion of MnO ₂ is

Correct answer

6

Step-by-step solution

2 MnO ₂+4 KOH + O ₂ Fusion 2 ~K ₂ MnO ₄+2 H ₂ O

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