Kemija - 2020. jesen, 30.

${\mathrm{O}\mathrm{H}}^{-}\backslash mathrm\{OH\}^\{-\}$

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

${\mathrm{P}\mathrm{O}}_4{}^{3-}\backslash mathrm\{PO\}\_\{4\}\{\; \}^\{3-\}$

${\mathrm{H}}_2{\mathrm{P}\mathrm{O}}_4^{-}\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{PO\}\_\{4\}^\{-\}$