Kemija - 2021. jesen, 30.

${\mathrm{H}}_2\mathrm{O}\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{O\}$  i  ${\mathrm{N}\mathrm{H}}_3\backslash mathrm\{NH\}\_\{3\}$

${\mathrm{N}\mathrm{H}}_3\backslash mathrm\{NH\}\_\{3\}$ i  ${\mathrm{N}\mathrm{H}}_4{}^{+}\backslash mathrm\{NH\}\_\{4\}\{\; \}^\{+\}$

${\mathrm{H}}_2\mathrm{O}\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{O\}$ i ${\mathrm{H}}_3{\mathrm{O}}^{+}\backslash mathrm\{H\}\_\{3\}\; \backslash mathrm\{O\}^\{+\}$

${\mathrm{H}}_3{\mathrm{O}}^{+}\backslash mathrm\{H\}\_\{3\}\; \backslash mathrm\{O\}^\{+\}$  i  ${\mathrm{N}\mathrm{H}}_4{}^{+}\backslash mathrm\{NH\}\_\{4\}\{\; \}^\{+\}$