Kemija - 2020. jesen, 12.

${\mathrm{C}\mathrm{l}}_2\backslash mathrm\{Cl\}\_\{2\}$

${\mathrm{B}\mathrm{r}}^{-}\backslash mathrm\{Br\}^\{-\}$

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

${\mathrm{B}\mathrm{r}}_2\backslash mathrm\{Br\}\_\{2\}$