Identify the ions and their charges in Na2SO4

To identify the ions and their charges in sodium sulfate (Na₂SO₄), we need to break the compound down into its constituent ions.

Sodium sulfate consists of two sodium ions and one sulfate ion. The sodium ion (Na) has a charge of +1. Therefore, since there are two sodium ions in sodium sulfate, the total positive charge from sodium ions is +2.

On the other hand, the sulfate ion (SO₄) carries a charge of -2. This negative charge balances the +2 charge from the two sodium ions, resulting in a neutral compound overall.

Putting it all together, we can summarize the ions in Na₂SO₄ as follows:

• Sodium ion: Na⁺
• Sulfate ion: SO₄^2-

So, the correct answer is option e) Na₂ + SO₄^2-.