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JEE MainChemistryRedox Reactions

Which of the following species does not show any tendency to undergo a disproportionation reaction?

Options

  1. AClO ₃^-
  2. BClO ₄^-
  3. CClO ^-
  4. DClO ₂^-

Correct answer

B. ClO ₄^-

Step-by-step solution

For a species to undergo disproportionation, the element must be present in an intermediate oxidation state so that it can be simultaneously oxidized and reduced. Let us determine the oxidation states of chlorine in the given oxoanions: ClO ^- : +1 ClO ₂^- : +3 ClO ₃^- : +5 ClO ₄^- : +7 The maximum possible oxidation state for chlorine (a Group 17 element) is +7 . Since chlorine in ClO ₄^- is already in its highest oxidation state, it cannot be oxidized any further. Therefore, ClO ₄^- cannot undergo a disproportion

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