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# What is meant by ‘disproportionation’ of an oxidation state? Give an example

$\begin{array}{1 1} \text{(a) Polymers are carbohydrates that cannot be further broken down into simpler units of other carbohydrates.} \\ \text{(b)When a particular oxidation state becomes equally stable relative to other oxidation states, it is said to undergo disproportionation.} \\ \text{(c) When a particular oxidation state becomes more stable relative to other oxidation states, it is said to undergo disproportionation.} \\ \text{(d) When a particular oxidation state becomes less stable relative to other oxidation states, one lower, one higher, it is said to undergo disproportionation.}\end{array}$

$3Mn^M O_4^{2-} +4 H^+ \to 2 Mn O^{-}_4 +MnO_2+2H_2O$