Question

what polyatomic ions have a 2 - charge? check all that apply. phosphate carbonate hydrogen carbonate sulfite chromate hydroxide

Explanation:

• Phosphate (\(PO_{4}^{3 -}\)) has a \(3 -\) charge.
• Carbonate (\(CO_{3}^{2 -}\)) has a \(2 -\) charge.
• Hydrogen carbonate (\(HCO_{3}^{-}\)) has a \(1 -\) charge.
• Sulfite (\(SO_{3}^{2 -}\)) has a \(2 -\) charge.
• Chromate (\(CrO_{4}^{2 -}\)) has a \(2 -\) charge.
• Hydroxide (\(OH^{-}\)) has a \(1 -\) charge.

Answer:

carbonate, sulfite, chromate