Kemija - 2021. jesen, 20.

A. $\mathrm{S}\mathrm{n}\backslash mathrm\{Sn\}$

B. ${\mathrm{H}}_2\mathrm{O}\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{O\}$

C. ${\mathrm{S}\mathrm{n}\mathrm{O}}_2\backslash mathrm\{SnO\}\_\{2\}$

D. ${\mathrm{H}\mathrm{N}\mathrm{O}}_3\backslash mathrm\{HNO\}\_\{3\}$