This depends on the reaction.
NO3 is a spectator ion. It does not undergo any chemical changes during a reaction and remains in solution.
SO4
The ion weight of SO4^2- (sulfate ion) is 96.06 grams per mole.
The charge of the sulfate ion (SO4) in a chemical compound is typically 2-.
This should be SO4-2 ion. sulfur shows +6 in this ion.
A spectator ion is an ion which does not participate in a reaction. Zn(s) + H2SO4 (aq) -----> ZnSO4 (aq) + H2 (g) That is the equation. The Zn goes from a solid to aqeous therefore it reacted. The Hydrogen in H2SO4 went from (aq) to (g) therefore it reacted. The SO4 however went from (aq) to (aq) and therefore didn't react and is therefore a spectator ion.
NO3 is a spectator ion. It does not undergo any chemical changes during a reaction and remains in solution.
SO4 is not a molecule. (SO4)2- is the sulfate ion.
SO4
The ion weight of SO4^2- (sulfate ion) is 96.06 grams per mole.
It is SO4 -2 named as sulphate ion.
The charge of the sulfate ion (SO4) in a chemical compound is typically 2-.
Mg(s) + H2SO4(aq) ==> MgSO4(aq) + H2(g) ... molecular equationMg(s) + 2H+(aq) + SO4^2-(aq) ==> Mg^2+(aq) + SO4^2-(aq) + H2(g) ... ionic equationMg(s) + 2H^+(aq) ==> Mg^2+(aq) + H2(g) ... net ionic equationSpectator is SO4^2- (sulfate ion).
This should be SO4-2 ion. sulfur shows +6 in this ion.
spectator ion
Hydrogenic ion
The species in question is the sulfate ion, which has a 2- charge. It is thus properly written as SO42-