| Element/ Group | Charge(s) | % Correct |
|---|---|---|
| Group 2 | +2 | 91%
|
| Group 1 | +1 | 84%
|
| Group 17 (7A) | -1 | 79%
|
| Group 16 (6A) | -2 | 79%
|
| Group 15 (5A) | -3 | 77%
|
| Zinc (Zn) | +2 | 70%
|
| Silver (Ag) | +1 | 67%
|
| Copper (Cu) | +1 or +2 | 53%
|
| Iron (Fe) | +2 or +3 | 53%
|
| Lead (Pb) | +2 or +4 | 35%
|
| Tin (Sn) | +2 or +4 | 35%
|