Kemija - 2024. probna, 4.

A. ${\mathrm{C}\mathrm{l}}^{-}\backslash mathrm\{Cl\}^\{-\}$

B. ${\mathrm{S}}^{2-}\backslash mathrm\{S\}^\{2-\}$

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

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