Disproportionation is a redox reaction where an element in a specific oxidation state is simultaneously oxidized to a higher oxidation state and reduced to a lower oxidation state. For this to happen, the element must be in an intermediate oxidation state. In ClO₄⁻, Chlorine is in its highest common oxidation state of +7. It can only be reduced to a lower state (e.g., +5, +3, +1, 0, -1), but it cannot be oxidized further. Therefore, it cannot undergo disproportionation.
Which one of the following species is not capable of showing disproportionation reaction ?
Asked in UPSC NDA 2 2016 · Topic: Inorganic Chemistry (Inorganic Reaction Mechanisms)
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