The name of the given anions:
S4O62− = Tetrathionate ion
S2O32− = Thiosulfate ion
S2O82− = Peroxydisulfate ion
S2O72− = Disulfate ion
Both S4O62− and S2O32− hasS−S bond as they both occurs in salt of dithionic acid which is stable i.e.,H2S2O6 .
