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JEE Advanced levelSingle correct optionDifficulty 3 of 3ph035

Sodium hypochlorite on warming disproportionates as . The number of electrons transferred per formula unit of formed is

  1. A6
  2. B2
  3. C4
  4. D5

Answer: C

Chlorine changes from +1 to +5 in , a loss of 4 electrons. Two Cl atoms go from +1 to -1, each gaining 2, a total of 4. So 4 electrons are transferred.
Practice p-Block Elements: Groups 17 and 18 More on Halogen compounds: HX, oxoacids, bleaching powder

More questions on Halogen compounds: HX, oxoacids, bleaching powder