Kemija - 2010./11. jesen - 24.

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

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

C. ${\mathrm{O}}_2\backslash mathrm\{O\}\_\{2\}$

D. ${\mathrm{S}}_8\backslash mathrm\{S\}\_\{8\}$