Which of the following is true about the reaction between sodium bromide and silver sulfate?

Question

1. No reaction
2. Total ionic equation is identical to the net ionic equation
3. Sodium ions and sulfate ions are present in the toal ionic equation but not in the net ionic equation
4. Bromide is a spectator ion

Answer 1

3 is the only one that fits.
The net ionic equation is
Ag^+(aq) + Br^-(aq) ==> AgBr(s)