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MHT CET202613 April 2026Evening ShiftChemistryRedox ReactionsActual

What is oxidation state of oxygen in OF ₂ and in KO ₂ respectively?

Options

  1. A+2 and +1
  2. B+2 and -1/2
  3. C+1 and -1/2
  4. D-2 and -1

Correct answer

B. +2 and -1/2

Step-by-step solution

In OF ₂ , fluorine is more electronegative than oxygen and always has an oxidation state of -1 . Let the oxidation state of oxygen in OF ₂ be x . x + 2(-1) = 0 x = +2 In KO ₂ , potassium is an alkali metal and always has an oxidation state of +1 . Let the oxidation state of oxygen in KO ₂ be y . +1 + 2y = 0 y = -1/2 The oxidation states of oxygen in OF ₂ and KO ₂ are +2 and -1/2 respectively. Answer: +2 and -1/2

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