Answer:
Two functional groups that contain ionic charges are:
1. Quaternary ammonium ions: These are positively charged functional groups that include a central nitrogen atom bonded to four organic groups and a positively charged counterion.
2. Carboxylate ions: These are negatively charged functional groups that consist of a carboxyl group, which includes a carbonyl group bonded to a hydroxyl group, and a negatively charged carboxylate group.