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JEE Main20207 Jan 2020Morning ShiftChemistryRedox ReactionsActual

Oxidation number of potassium in K 2 O , K 2 O 2 and K O 2 , respectively, is:

Options

  1. A+ 2 , + 1 and + 1 2
  2. B+ 1 , + 1 and + 1
  3. C+ 1 , + 4 and + 2
  4. D+ 1 , + 2 and + 4

Correct answer

B. + 1 , + 1 and + 1

Step-by-step solution

K 2 O K + 1 − O − 2 − K + 1 oxygen is more E.N. than potassium K 2 O 2 K + 1 − O − 1 − O − 1 − K + 1 K O 2

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