Chapter 2 - Atoms, Molecules, and Ions - Exercises - Page 77: 2.69b

Cation Name: Sodium Cation Charge: 1+ Anion Name: Sulfate Anion Charge: 2-

Sodium needs to lose one electron to get a full outer shell, therefore its charge is 1+. SO$_{4}^{2-}$ is the sulfate ion, which should be on any standard list of ions.