What is the ionic compound name of A{l_2}{O_3} ?

The ionic compound \( \text{Al}_2\text{O}_3 \) is named aluminum oxide.

Here’s the breakdown of how we determine this:

1. **Identify the Ions:**
- Aluminum (Al) is a metal that forms a cation with a \( +3 \) charge: \( \text{Al}^{3+} \).
- Oxygen (O) is a non-metal that forms an anion with a \( -2 \) charge: \( \text{O}^{2-} \).

2. **Determine the Ratio:**
- To balance the charges, we need two aluminum ions to balance with three oxide ions.
- Thus, the formula \( \text{Al}_2\text{O}_3 \) represents the correct ratio.

3. **Naming Conventions:**
- The metal (aluminum) is named first.
- The non-metal (oxygen) is named with its suffix changed to “-ide” (oxide).

Putting it all together, \( \text{Al}_2\text{O}_3 \) is called aluminum oxide.