Final answer:
The correct formula for the ionic compound containing aluminum and permanganate ions is Al2(MnO4)3, as two aluminum ions (Al3+) balance with three permanganate ions (MnO4-) to create a neutral compound.
Step-by-step explanation:
The formula of the ionic compound containing aluminum and permanganate ions can be determined by balancing the total positive and negative charges to ensure the compound is electrically neutral. Aluminum has a charge of +3 (Al3+), and permanganate has a charge of -1 (MnO4-).
To find the correct formula, we need to find the least common multiple of the charges to balance them. Since aluminum's charge is +3, and permanganate's charge is -1, we need three permanganate ions to balance two aluminum ions, resulting in a formula of Al2(MnO4)3.
Therefore, the correct option is B) Al2(MnO4)3.