Final answer:
The correct chemical formula for aluminum iodate is D) Al(IO3)3, as it combines one Al3+ ion with three IO3- ions to form a neutral compound.
Step-by-step explanation:
The correct chemical formula for aluminum iodate is option D) Al(IO3)3. To determine this, we need to consider the charges on the aluminum ion and the iodate ion. Aluminum typically forms a 3+ ion, written as Al3+, whereas the iodate ion has a formula of IO3− with a 1− charge. To create a neutral ionic compound, we need three iodate ions to balance the 3+ charge of one aluminum ion, which leads us to the formula Al(IO3)3. This ensures that the compound is electrically neutral, with the total positive and negative charges being equal.