Kemija - 2024./25. jesen - 13.

$\mathrm{C}\mathrm{O}\backslash mathrm\{CO\}$

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

${\mathrm{S}\mathrm{O}}_2\backslash mathrm\{SO\}\_\{2\}$

${\mathrm{N}}_2\mathrm{O}\backslash mathrm\{N\}\_\{2\}\; \backslash mathrm\{O\}$