Oxidation states in KMnO₄ and K₂Cr₂O₇ (Permanganate Mn in +7 (d⁰); dichromate Cr in +6 (d⁰): strong oxidizers in acidic medium)
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Permanganate Mn in +7 (d⁰); dichromate Cr in +6 (d⁰) — strong oxidizers in acidic medium
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MnO₄⁻ stable in neutral/basic slower kinetics; acidic + heat drives Cr₂O₇²⁻ / MnO₄⁻ oxidations.