When the compound na2s forms what happens to the na and s ions

Since sodium ions each have a single positive charge (lacking one electron in its valence orbital) and sulfur ions each have a 2- charge (having two extra electrons in its valence orbital), the compound Na2S forms when two sodium ions are ironically bound to a central sulfur.

Nothing, ATOMS lose or gain electrons to become IONS 
Two Na ATOMS lose 1 electron each and 1 S ATOM gains 2 electrons