* Identify the charges: Aluminum (Al) has a +3 charge (Al³⁺) and nitrate (NO₃) has a -1 charge (NO₃⁻).
* Balance the charges: To balance the charges, you need three nitrate ions (3 x -1 = -3) for every one aluminum ion (+3).
* Write the formula: The formula is Al(NO₃)₃
Explanation:
* The subscript "3" after the parentheses indicates there are three nitrate ions (NO₃) for each aluminum ion.
* This ensures the overall charge of the compound is neutral (+3 - 3 = 0).
