Chapter 6, Problem 109QRT

Sulfur and oxygen form a series of 2− anions including sulfite, ${\text{SO}}_3^{2-}$, and sulfate, ${\text{SO}}_4^{2-}$. In addition to these, there are three other more complex anions—dithionite, ${\text{S}}_2{\text{O}}_4^{2-}$, dithionate, ${\text{S}}_2{\text{O}}_6^{2-}$, and tetrathionate, ${\text{S}}_4{\text{O}}_6^{2-}$. Write correct Lewis structures for dithionite, dithionate, and tetrathionate ions.