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  4. Oxidation number of Mn in MnO4- ion is

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Q. Oxidation number of $ Mn $ in $ MnO_{4}^{-} $ ion is

JamiaJamia 2010

Solution:

Let the oxidation number of $ Mn $ is $ x $ . $ Mn{{O}_{4}}\Rightarrow x+4\times (-2)=-1 $ $ x-8=-1 $ $ x=-1+8 $ $ x=+7 $