Kemija - 2012./13. ljeto - 34.

A. ${\mathrm{N}\mathrm{O}}_2\backslash mathrm\{NO\}\_\{2\}$

B. ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{N}\mathrm{O}}_2\backslash mathrm\{C\}\_\{6\}\; \backslash mathrm\{H\}\_\{5\}\; \backslash mathrm\{NO\}\_\{2\}$

C. ${\left({\mathrm{C}\mathrm{H}}_3\right)}_2\mathrm{N}\mathrm{H}\backslash left(\backslash mathrm\{CH\}\_\{3\}\backslash right)\_\{2\}\; \backslash mathrm\{NH\}$

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