| Element/ Group | Charge(s) | % Correct |
|---|---|---|
| Group 2 | +2 | 92%
|
| Group 1 | +1 | 85%
|
| Group 17 (7A) | -1 | 79%
|
| Group 16 (6A) | -2 | 79%
|
| Group 15 (5A) | -3 | 74%
|
| Zinc (Zn) | +2 | 72%
|
| Silver (Ag) | +1 | 69%
|
| Copper (Cu) | +1 or +2 | 56%
|
| Iron (Fe) | +2 or +3 | 56%
|
| Lead (Pb) | +2 or +4 | 38%
|
| Tin (Sn) | +2 or +4 | 38%
|