| Hint | Answer | % Correct |
|---|---|---|
| Ammonium | NH4+ | 93%
|
| Hydroxide | OH- | 76%
|
| Cyanide | CN- | 75%
|
| Chlorate | ClO3- | 73%
|
| Chlorite | ClO2- | 71%
|
| Nitrate | NO3- | 70%
|
| Hydrogen Carbonate (Bicarbonate) | HCO3- | 69%
|
| Acetate | C2H3O2- | 67%
|
| Perchlorate | ClO4- | 67%
|
| Hypochlorite | ClO- | 63%
|
| Nitrite | NO2- | 62%
|
| Carbonate | CO3_(2-) | 60%
|
| Sulfate | SO4_(2-) | 52%
|
| Chromate | CrO4_(2-) | 51%
|
| Sulfite | SO3_(2-) | 49%
|
| Permanganate | MnO4- | 48%
|
| Bromate | BrO3- | 46%
|
| Phosphate | PO4_(3-) | 46%
|
| Dichromate | Cr2O7_(2-) | 45%
|
| Iodate | IO3- | 42%
|
| Fluorate | FO3- | 38%
|
| Phosphite | PO3_(3-) | 37%
|
| Thiocyanate | SCN- | 36%
|
| Perixide | O2_(2-) | 25%
|
| Oxalate | C2O4_(2-) | 20%
|