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2. What is the oxidation number for a simple MONOTOMIC ION?

  • 0
  • Same as its charge
  • -1
  • +1

3. What is the oxidation number for an OXYGEN ION?

  • +2
  • -1
  • -2
  • 0

4. What happens to oxidation number during REDUCTION?

  • Decreases
  • Increases
  • Stays the same

5. What is the formula for COPPER (I) OXIDE?

  • Cu2O2
  • CuO
  • Cu2O
  • CuO2
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