What is Tellurium(VI) fluoride?
'''Tellurium(VI) fluoride''', also known as '''tellurium hexafluoride''', is a [[chemical compound]]. Its chemical formula is TeF<sub>6</sub>. It contains [[tellurium]] in its +6 [[oxidation state]]. It also contains [[fluoride]] [[ion]]s. It is the oldest known tellurium fluoride. == Properties == Tellurium(VI) fluoride is a colorless gas. It condenses to a white solid when made cold. It has a very bad smell. It is very toxic. It is similar to [[selenium hexafluoride]], even though it is less volatile (not as easily evaporated). It reacts with water to make [[telluric acid]] and [[hydrofluoric acid]]. It reacts with [[tellurium]] under {{convert|200|C|F}} to make [[tellurium tetrafluoride]]. == Preparation == It is made by reacting hot [[fluorine]] with tellurium. Cold fluorine gas makes tellurium tetrafluoride. It can also be made by reacting fluorine with [[tellurium trioxide]]. Another way to make it is reacting [[selenium tetrafluoride]] and [[tellurium dioxide]] to make tellurium tetrafluoride, which is heated above {{convert|200|C|F}} to make tellurium hexafluoride and tellurium. == Related pages == *[[Tellurium(IV) fluoride]] *[[Tellurium(IV) chloride]] [[Category:Tellurium compounds]] [[Category:Fluorine compounds]]