Here are the correct matches for the groups in Column A to the types of ions they form in Column B:
- Group 1A: d. +1
- Group 2A: a. +2
- Group 3A: g. +3
- Group 4A: e. +4/-4
- Group 5A: b. -3
- Group 6A: h. -2
- Group 7A: f. -1
- Group 8A: c. 0
These matches reflect the typical charge of ions formed by elements in these groups of the periodic table.