Identify the spectator ions in the following complete ionic equation.
Ba2+(aq)+2I−(aq)+2Na+(aq)+SO2−4(aq)→BaSO4(s)+2I−(aq)+2Na+(aq)

Respuesta :

Ba2+(aq)+2I−(aq)+2Na+(aq)+SO2−4(aq)→BaSO4(s)+2I−(aq)+2Na+(aq)

The spectator ions are:    
Na⁺,  I⁻.

They appear on both sides of the reaction, hence did not take part in the reaction.