Chemistry 201 Ions to memorize (Polyatomic Cations & Anions)
Quiz yourself by guessing what should be in
each of the black rectangles below before clicking
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| Flap 1 |  |
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| Flap 2 | |
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| OH (-) | hydroxide |
| OCN (-) | cyanate |
| NO3 (-) | Nitrate |
| SO3 (-2) | Sulfite |
| SO4 (-2) | Sulfate |
| HSO4 (-) | Hydrogen Sulfate |
| CLO (-) | Hypochlorite |
| CLO2 (-) | Chlorite |
| CLO3 (-) | Chlorate |
| CLO4 (-) | Perchlorate |
| CN (-) | Cyanide |
| SCN (1) | Thiocyanate |
| CO3 (2-) | Carbonate |
| HCO3 (-) | Hydrogen Carbonate |
| PO4 (3-) | Phosphate |
| HPO4 (2-) | Hydrogen Phosphate |
| C2 O4 (2-) | Oxalate |
| C2 H3 O2 (-) | Acetate |
| O2 (2-) | Peroxide |
| CrO4 (2-) | Chromate |
| Cr2 O7 (2-) | Dichromate |
| NH4 (+) | Ammonium |
| N3 (-) | Azide |
| BrO3 (-) | Bromate
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| IO3 (-) | Iodate |
| N03 (-) | Nitrate |
| SO4 (2-) | Sulfate |
| S2O3 (2-) | Thiosulfate |
| SiO3 (2-) | Silicate |
| SO2 (2-) | Hyposulfite |
| PO3 (3-) | Phosphite |
| PO2 (3-) | Hypophosphite |
| H2PO4 (-) | Dihydrogen Phosphate |
| As04 (3-) | Arsenate |
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