Why is is that tellurium(VI) fluoride is completely hydrolysed but iodine(III) fluoride isn't, even in hot water?

Tellurium(VI) fluoride is completely hydrolysed into tellurium(VI) oxide and hydrofluoric acid, but iodine(III) fluoride isn't, stopping at the iodine(III) fluoride dihydroxide/hydrofluoric acid level, even after extensive warming. Why is it that way, and how do I fix it?




Why not? Tellurium hexafluoride also goes through an intermediate:



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> The hydrolysis of tellurium hexafluoride produces the fluoroorthotelluric acids, $\ce{TeF\_n(OH)\_{6–n}}$, n= 1–4, which undergo complete hydrolysis to orthotelluric acid only over a long period of time.
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**Ref.**: Fraser, G.W., & Meikle, G.D. (**1974**). *Hydrolysis of tellurium hexafluoride*. Journal of The Chemical Society, Chemical Communications, 624-625, DOI: [10.1039/C39740000624](https://pubs.rsc.org/en/content/articlelanding/1974/C3/C39740000624)


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