Kemija - 2015./16. ljeto - 30.

A. $\mathrm{Z}\mathrm{n}(\mathrm{s})\to {\mathrm{Z}\mathrm{n}}^{2+}(\mathrm{a}\mathrm{q})+2{\mathrm{e}}^{-}\backslash mathrm\{Zn\}(\backslash mathrm\{s\})\; \backslash rightarrow\; \backslash mathrm\{Zn\}^\{2+\}(\backslash mathrm\{aq\})+2\; \backslash mathrm\{~e\}^\{-\}$

B. $\mathrm{Z}\mathrm{n}(\mathrm{s})+2{\mathrm{e}}^{-}\to {\mathrm{Z}\mathrm{n}}^{2+}(\mathrm{a}\mathrm{q})\backslash mathrm\{Zn\}(\backslash mathrm\{s\})+2\; ~\backslash mathrm\{e\}^\{-\}\; \backslash rightarrow\; \backslash mathrm\{Zn\}^\{2+\}(\backslash mathrm\{aq\})$

C. $\mathrm{M}\mathrm{g}(\mathrm{s})\to {\mathrm{M}\mathrm{g}}^{2+}(\mathrm{a}\mathrm{q})+2{\mathrm{e}}^{-}\backslash mathrm\{Mg\}(\backslash mathrm\{s\})\; \backslash rightarrow\; \backslash mathrm\{Mg\}^\{2+\}(\backslash mathrm\{aq\})+2~\; \backslash mathrm\{e\}^\{-\}$

D. $\mathrm{M}\mathrm{g}(\mathrm{s})+2{\mathrm{e}}^{-}\to {\mathrm{M}\mathrm{g}}^{2+}(\mathrm{a}\mathrm{q})\backslash mathrm\{Mg\}(\backslash mathrm\{s\})+2~\; \backslash mathrm\{e\}^\{-\}\; \backslash rightarrow\; \backslash mathrm\{Mg\}^\{2+\}(\backslash mathrm\{aq\})$