SO4^(2-) is sulph**A**te anion
SO3^(2-) is sulph**I**te anion
S^(2-) is sulphi**D**e anion
NB Notiuce the ionic charge remains at '2-', but the number of oxygen atoms changes, and there by the anionic name ,by ONE letter.
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The compound formed by zinc, sulfur, and oxygen is zinc sulfite (ZnSO3), which is a salt that contains zinc ions (Zn2+) and sulfite ions (SO32-).
NO such molecule as 'So32'. If you mean 'SO3^(2-)' this is the sulphite anion. NB There is no element with the initials 'So'. or no molecule with '32' oxygen atoms to one sulphur atom.
The correct name for the compound NH4Cl is ammonium chloride. It is composed of positively charged ammonium ions (NH4+) and negatively charged chloride ions (Cl-).
The ionic compound ZnSO3 is made up of the zinc ion (Zn2+) and the sulfite ion (SO32-). The formula for zinc sulfite is ZnSO3.
The net ionic equation for the reaction between Na2SO3 and CaCl2 is: Na2SO3 (aq) + CaCl2 (aq) -> 2NaCl (aq) + CaSO3 (s) The spectator ions are sodium ions (Na+) and chloride ions (Cl-), while the reacting ions are calcium ions (Ca2+) and sulfite ions (SO32-), which form an insoluble precipitate of calcium sulfite.