AP Chemistry set of polyatomic ions necessary to know
| 855661413 | Ammonium | NH₄¹⁺ | |
| 855661414 | Acetate | CH₃COO¹⁻ or C₂H₃O₂ | |
| 855661415 | Bicarbonate or hydrogen Carbonate | HCO₃¹⁻ | |
| 855661416 | Carbonate | CO₃²⁻ | |
| 855661417 | Chromate | CrO₄²⁻ | |
| 855661418 | Dichromate | Cr₂O₇²⁻ | |
| 855661419 | Perchlorate | ClO₄⁻ | |
| 855661420 | Chlorate | ClO₃⁻ | |
| 855661421 | Chlorite | ClO₂⁻ | |
| 855661422 | Hypochlorite | ClO⁻ | |
| 855661423 | Bromate | BrO₃⁻ | |
| 855661424 | Iodate | IO₃⁻ | |
| 855661425 | Hydroxide | OH⁻ | |
| 855661426 | Cyanide | CN⁻ | |
| 855661427 | Thiocyanate | SCN¹⁻ | |
| 855661428 | Nitrate | NO₃⁻ | |
| 855661429 | Nitrite | NO₂⁻ | |
| 855661430 | Sulfate | SO₄²⁻ | |
| 855661431 | Sulfite | SO₃²⁻ | |
| 855661432 | Phosphate | PO₄³⁻ | |
| 855661433 | Phosphite | PO₃³⁻ | |
| 855661434 | Oxalate | C₂O₄²⁻ | |
| 855661435 | Permanganate | MnO₄⁻ | |
| 855661436 | Selenate | SeO₄²⁻ | |
| 855661437 | Silicate | SiO₃²⁻ |

