(Solved): Identify the spectator ions in the following complete ionic equation. \[ \mathrm{Ba}^{2+}(a q)+2 \ ...

Identify the spectator ions in the following complete ionic equation. \[ \mathrm{Ba}^{2+}(a q)+2 \mathrm{I}^{-}(a q)+2 \mathrm{Na}^{+}(a q)+\mathrm{SO}_{4}^{2-}(a q) \rightarrow \mathrm{BaSO}_{4}(s)+2 \mathrm{I}^{-}(a q)+2 \mathrm{Na}^{+}(a q) \] Express your answers as ions separated by a comma. Do not enter the coefficient or phases.