Kemija - 2018. jesen, 12.

${\mathrm{M}\mathrm{n}\mathrm{O}}_4{}^{-}\backslash mathrm\{MnO\}\_\{4\}\{\; \}^\{-\}$

${\mathrm{C}\mathrm{l}\mathrm{O}}_3{}^{-}\backslash mathrm\{ClO\}\_\{3\}\{\; \}^\{-\}$

${\mathrm{H}}_2\mathrm{O}\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{O\}$

${\mathrm{O}\mathrm{H}}^{-}\backslash mathrm\{OH\}^\{-\}$