Kemija - 2022. jesen, 3.

A. ${\mathrm{F}}^{-}\backslash mathrm\{F\}^\{-\}$

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

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

D. $\mathrm{N}\mathrm{e}\backslash mathrm\{Ne\}$