Which of the following anions has the largest number of oxygen atoms and at the same time has the most negative charge?

Question

Quizplus · Accepted Answer

Phosphate (PO4) has the largest number of oxygen atoms (four) and a negative charge of -3, making it the anion with the most negative charge. Carbonate (CO3) has three oxygen atoms and a charge of -2, permanganate (MnO4) has four oxygen atoms and a charge of -1, and chromate (CrO4) has four oxygen atoms and a charge of -2.

Which of the Following Anions Has the Largest Number of Oxygen