Kemija - 2018. ljeto, 6.

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

${\mathrm{F}\mathrm{e}}^{2+}\backslash mathrm\{Fe\}^\{2+\}$

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

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