Kemija - 2009./10. jesen - 2.

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

B. ${\mathrm{B}\mathrm{C}\mathrm{l}}_3\backslash mathrm\{BCl\}\_\{3\}$

C. ${\mathrm{H}}_2\mathrm{S}\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{~S\}$

D. ${\mathrm{C}\mathrm{O}}_2\backslash mathrm\{CO\}\_\{2\}$