This is just a list of fourteen very common polyatomic ions. The best thing to do is just memorize them. We'll have quizzes on them by themselves, and as parts of compounds. They will not be open notes quizzes. Maybe flash cards would be a good idea? Click here to see what procrastinating feels like!
| CH3COO – | acetate |
| NH4+ | ammonium |
| CO32– | carbonate |
| ClO3– | chlorate |
| CrO42– | chromate |
| CN – | cyanide |
| OH – | hydroxide |
| Hg22+ | mercury (I) |
| NO3– | nitrate |
| C2O42– | oxalate |
| MnO4– | permanganate |
| O22– | peroxide |
| PO43– | phosphate |
| SO42– | sulfate |
How to write names from formulas.
How to write formulas from names.
More complete nomenclature notes.