Kemija - 2010./11. ljeto - 12.

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

${\mathrm{C}\mathrm{C}\mathrm{l}}_4\backslash mathrm\{CCl\}\_\{4\}$

${\mathrm{B}\mathrm{F}}_3\backslash mathrm\{BF\}\_\{3\}$

${\mathrm{C}\mathrm{l}\mathrm{F}}_3\backslash mathrm\{ClF\}\_\{3\}$