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

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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