Determine the Chemical Formula for the Compound Aluminum Phosphite

To determine the chemical formula for aluminum phosphite, we first need to understand the components involved. Aluminum (Al) typically has a +3 oxidation state, while phosphite (which is derived from phosphorous acid, H₃PO₃) has the formula PO₃^3-.

Since aluminum has a +3 charge, and phosphite has a -3 overall charge, we need one aluminum ion to balance out one phosphite ion. Therefore, the formula for aluminum phosphite becomes:

• 1 Aluminum (Al³⁺)
• 1 Phosphite (PO₃^3-)

This results in the formula:

AlPO₃

Hence, the chemical formula for the compound aluminum phosphite is AlPO₃.