Kemija - 2013./14. ljeto - 36.

A. ${\mathrm{S}\mathrm{O}}_3\backslash mathrm\{SO\}\_\{3\}$

B. ${\mathrm{H}\mathrm{S}}^{-}\backslash mathrm\{HS\}^\{-\}$

C. ${\mathrm{S}}_2{\mathrm{O}}_3{}^{2-}\backslash mathrm\{S\}\_\{2\}\; \backslash mathrm\{O\}\_\{3\}\{\; \}^\{2-\}$

D. ${\mathrm{S}\mathrm{O}}_2\backslash mathrm\{SO\}\_\{2\}$