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CGP EDU Academic Team
Published on: August 12, 2026
What is meant by disproportionation of an oxidation state ? Give an example.
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When a particular oxidation state becomes less stable relative to other oxidation states, one lower, one higher. It is said to undergo disproportionation,
e.g., 3Mn VI O 4 2– + 4H + 
2Mn VII O 4 – + Mn IV O 2 + 2H 2 O
Mn (VI) is unstable relative to Mn (VII) and Mn (IV).
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