Kemija - 2019. jesen, 9.

${\mathrm{C}\mathrm{F}}_4\backslash mathrm\{CF\}\_\{4\}$

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

${\mathrm{C}\mathrm{B}\mathrm{r}}_4\backslash mathrm\{CBr\}\_\{4\}$

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