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avatarExemplaryAbafar7472
Secondary V • 7mo.
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Can someone help me understand why g. is 4 in this lesson please?

Chemistry
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  • Explanation from Alloprof

    Explanation from Alloprof

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      avatarMélissa Steacher check
      Team Alloprof • 7mo.

      Hi :)

      Oxygen usually has an oxidation number of -2.

      You know that the sum of the oxidation numbers in a neutral compound is zero.

      Thus, in ClO₂, the oxidation number of O is -2

      For two O atoms, the total oxidation number is -4.

      So the oxidation number of Cl must be +4. This makes the sum of all the oxidation numbers equal to zero.

      Hope I help you. :) To your next question :D

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