Hg 2 + → I − HgI 2 → I − [ Hg II I 4 ] 2 − {\displaystyle {\ce {Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2-}}}
![{\displaystyle {\ce {Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2-}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/bcffae12e83598e20f2ae21e908f4d40b4a67000)