Kemija - 2018. ljeto, 15.

${\mathrm{N}\mathrm{a}\mathrm{N}\mathrm{O}}_2\backslash mathrm\{NaNO\}\_\{2\}$

$\mathrm{C}\mathrm{a}{\left({\mathrm{N}\mathrm{O}}_3\right)}_2\backslash mathrm\{Ca\}\backslash left(\backslash mathrm\{NO\}\_\{3\}\backslash right)\_\{2\}$

${\mathrm{N}\mathrm{H}}_4\mathrm{B}\mathrm{r}\backslash mathrm\{NH\}\_\{4\}\; \backslash mathrm\{Br\}$

${\mathrm{N}}_2{\mathrm{H}}_4\backslash mathrm\{N\}\_\{2\}\; \backslash mathrm\{H\}\_\{4\}$