a structure of compound related question [duplicate]








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[Structure of xenon hexafluoride](/questions/64550/structure-of-xenon-hexafluoride)

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Closed 6 years ago.



Why the structure of XeF6 is capped octahedral but not pentagonal pyramidal although there is a possibility of being pentagonal pyramidal (with lone pair below the pyramid) ?




It is because to minimize lone pair and bond pair repulsion. In pentagonal bipyramidal arrangement lone pair electron will occupy eqatorial position which results in more lone pair -bond pair repulsions. 


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