Kemija - 2009./10. jesen - 8.

A. ${\mathrm{A}\mathrm{l}}^{3+}\backslash mathrm\{Al\}^\{3+\}$

B. ${\mathrm{M}\mathrm{g}}^{2+}\backslash mathrm\{Mg\}^\{2+\}$

C. ${\mathrm{N}\mathrm{a}}^{+}\backslash mathrm\{Na\}^\{+\}$

D. $\mathrm{N}\mathrm{a}\backslash mathrm\{Na\}$