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Polyatomic ions
| polyatomic name | polyatomic formula |
|---|---|
| bromate | BrO3 -1 charge |
| chlorate | ClO3 -1 charge |
| iodate | IO3 -1 charge |
| thiocyanate | SCN -1 charge |
| acetate | C2H3O2 -1 charge |
| permanganate | MnO4 -1 charge |
| bicarbonate | HCO3 -1 charge |
| carbonate | CO3 -2 charge |
| phthalates | C8H4O4 -2 charge |
| chromate | CrO4 -2 charge |
| oxalate | C2O4 -2 charge |
| peroxide | O2 -2 charge |
| arsenate | AsO4 -3 charge |