Here is the matching of the groups to the type of ions they form:
- Group 1A: d. +1
- Group 2A: f. +2
- Group 3A: g. +3
- Group 4A: b. +4/-4
- Group 5A: h. -3
- Group 6A: e. -2
- Group 7A: a. -1
- Group 8A: c. 0
This arrangement reflects the common ion charges for elements in these groups of the periodic table.