Polyatomic Ions: Practice Quiz

Ten questions pulled at random. Regenerate any time for a fresh set.

1. 1. The formula for hydroxide is:

   HO₂¹⁻H₂OO²⁻OH¹⁻

2. 2. ClO¹⁻ is named:

   HypochloriteChloritePerchlorateChlorate

3. 3. Phosphate carries which charge?

   3⁻3⁺2⁻1⁻

4. 4. Permanganate is:

   MnO₂Mn²⁺MnO₄²⁻MnO₄¹⁻

5. 5. Hydrogen carbonate (bicarbonate) is:

   HSO₄¹⁻H₂CO₃HCO₃¹⁻CO₃²⁻

6. 6. Which formula is cyanide?

   CO₃²⁻ClO¹⁻CH₃COO¹⁻CN¹⁻

7. 7. What is the formula and charge of sulfate?

   S²⁻SO₄²⁻SO₃²⁻SO₄¹⁻

8. 8. Nitrite is:

   NO₂²⁻N³⁻NO₂¹⁻NO₃¹⁻

9. 9. Which polyatomic ion fizzes with acid to release CO₂?

   HydroxideChlorateCarbonateAcetate

10. 10. ClO₄¹⁻ is named:

    ChloritePerchlorateChlorateHypochlorite