Kemija - 2014./15. jesen - 36.

${\mathrm{F}\mathrm{e}}^{3+}\mathrm{u}{\mathrm{F}\mathrm{e}}^{2+}\backslash mathrm\{Fe\}^\{3+\}\; ~\backslash mathrm\{u\}~\; \backslash mathrm\{Fe\}^\{2+\}$

$\mathrm{C}(\mathrm{I}\mathrm{I}\mathrm{I})\mathrm{u}\mathrm{C}(\mathrm{I}\mathrm{V})\backslash mathrm\{C\}(\backslash mathrm\{III\})\; \backslash mathrm\{~u\}\; ~\backslash mathrm\{C\}(\backslash mathrm\{IV\})$

$1\mathrm{/}2{\mathrm{C}\mathrm{l}}_2\mathrm{u}{\mathrm{C}\mathrm{l}}^{-}1\; /\; 2\; ~\backslash mathrm\{Cl\}\_\{2\}\; \backslash mathrm\{~u\}~\; \backslash mathrm\{Cl\}^\{-\}$

$\mathrm{S}(\mathrm{V}\mathrm{I})\mathrm{u}\mathrm{S}(\mathrm{I}\mathrm{V})\backslash mathrm\{S\}(\backslash mathrm\{VI\})\; \backslash mathrm\{~u\}\; ~\backslash mathrm\{S\}(\backslash mathrm\{IV\})$