Polyatomic Ions

Edit Answers
123456789101112
Across
  1. 1. PO3 (-3)
  2. 3. CO3 (-2)
  3. 8. Among a pair of polyatomic ions, the ion with more oxygens ends in...?
  4. 9. CH3COO (-)
  5. 10. OH (-)
  6. 11. PO4 (-3)
  7. 12. SO3 (-2)
Down
  1. 2. SO4 (-2)
  2. 3. CN (-)
  3. 4. The only (+) polyatomic ion you need to know.
  4. 5. NO3 (-)
  5. 6. ClO3 (-)
  6. 7. Among a pair of polyatomic ions, the ion with less oxygens ends in...?