The name of the given anions:

S₄O₆^2- = Tetrathionate ion

S₂O₃^2- = Thiosulfate ion

S₂O₈^2- = Peroxydisulfate ion

S₂O₇^2- = Disulfate ion

Both $S_4{O}_6^{2-}$ and $S_2{O}_3^{2-}$ has$S-S$ bond as they both occurs in salt of  dithionic acid which is stable i.e.,$H_2{S}_2{O}_6$  .