What is the change in the oxidation number of phosphorus in the the reaction represented…

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Chemistry WAEC 1992

What is the change in the oxidation number of phosphorus in the the reaction represented by the following equation? 4P (s) + 5O(2)(g) → 2P2O5(g)

  • 0 to + 2
  • 0 to 5 checkmark
  • +4 to + 2
  • +4 to +5
  • +4 to +7

The correct answer is: B

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