What is the correct formula for an ionic compound that contains aluminum ions and carbonate ions

The correct formula for an ionic compound that contains aluminum ions and carbonate ions is Al2(CO3)3.

The formula for an ionic compound that contains aluminum ions (Al3+) and carbonate ions (CO32-) can be determined by balancing the charges between the ions.

First, we need to find the least common multiple (LCM) of the charges of both ions, which is 6 in this case since aluminum has a charge of +3 and carbonate has a charge of -2.

To balance the charges, we need two aluminum ions for every three carbonate ions. Therefore, the correct formula for the compound would be Al2(CO3)3.