Polyatomic Ions
| Cations | ||||
|---|---|---|---|---|
| NH41+ | ammonium ion | H3O1+ | hydronium ion | |
| Anions | ||||
| C2H3O21– | acetate ion | OH1– | hydroxide ion | |
| CO32– | carbonate ion | NO31– | nitrate ion | |
| ClO41– | perchlorate ion | NO21– | nitrite ion | |
| ClO31– | chlorate ion | MnO41– | permanganate ion | |
| ClO21– | chlorite ion | O22– | peroxide ion | |
| ClO1– | hypochlorite ion | PO43– | phosphate ion | |
| CrO42– | chromate ion | SO42– | sulfate ion | |
| Cr2O72– | dichromate ion | SO32– | sulfite ion | |
| CN1– | cyanide ion | |||
Some Common Polyatomic Ions