Which Lewis dot structure is a valid representation for the sulfite ion $\left[{\mathrm{SO}}_3^{2-}\right]$ ?

Lewis dot structure  D is a valid representation for the sulfite ion $\left[{\mathrm{SO}}_3^{2-}\right]$ .

Sulfur makes up the $S{\mathrm{O}}_3{2}^{-}$ ion's main atom. Lewis structure of $S{\mathrm{O}}_3{2}^{-}$ ion consists of four bonds around the sulphur atom and one lone pair. Therefore, the core atom of the $S{\mathrm{O}}_3{2}^{-}$ ion is surrounded by five electron groups.