Names and Symbols
Popularity (by total correct streak): 17
Popularity (by number of users): 6
| Ammonium | NH4+1 | |
| Mercury (I) | Hg2+2 | |
| Perchlorate | ClO4-1 | |
| Chlorate | ClO3-1 | |
| Chlorite | ClO2-1 | |
| Hypochlorite | ClO-1 | |
| Periodate | IO4-1 | |
| Iodate | Io3-1 | |
| Iodite | IO2-1 | |
| Hypoiodite | IO-1 | |
| Hydrogen sulfate | HSO4-1 | |
| Hydrogen sulfite | HSO3-1 | |
| Thiocyanate | SCN-1 | |
| Carbonate | CO3-2 | |
| Dichromate | CR2O7-2 | |
| Sulfate | SO4-2 | |
| Sulfite | SO3-2 | |
| Silicate | SiO3-2 | |
| Thiosulfate | S2O3-2 | |
| Hexacyanoferrate (III) | Fe(CN)6-3 | |
| Hexacyanoferrate (II) | Fe(CN)6-4 | |
| Hydronium | H3O+1 | |
| Acetate | C2H3O2-1 | |
| Perbromate | BrO4-1 | |
| Bromate | BrO3-1 | |
| Bromite | BrO2-2 | |
| Hypobromite | BrO-1 | |
| Cyanide | CN-1 | |
| Hydrogen carbonate | HCO3-1 | |
| Permanganate | MnO4-1 | |
| Hydroxide | OH-1 | |
| Dihydrogen phosphate | H2PO4-1 | |
| Nitrate | NO3-1 | |
| Nitrite | NO2-1 | |
| Chromate | CrO4-2 | |
| Peroxide | O2-2 | |
| Tartrate | C4H4O6-2 | |
| Oxalate | C2O4-2 | |
| Hydrogen phosphate | HPO4-2 | |
| Phosphate | PO4-3 | |
| Phosphite | PO3-3 |
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