Final answer:
Two aluminum ions (Al³+) are present in the compound Al2O3 to balance the positive and negative charges.
Explanation:
Aluminum ions: Two aluminum ions (Al³+) are present because each has a charge of 3+, resulting in a total of six positive charges in the compound. The compound Al2O3 is formed when combined with three oxide ions (O2-) to maintain electrical neutrality.
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