Final answer:
To balance the charge on one X+6 cation, you would need six Y2- anions
Step-by-step explanation:
When balancing charges in an ionic compound, the number of positive charges must be equal to the number of negative charges. In this case, one X+6 cation has a charge of +6. To balance it, we need six Y2- anions, each with a charge of -2. Therefore, the balanced compound would be X6Y12.