The reaction of three molecules of fluorine gas with a Xe atom produces the substance xenon hexafluoride,

Question:

The reaction of three molecules of fluorine gas with a Xe atom produces the substance xenon hexafluoride, XeF6:
Xe(g) + 3 F2(g) → XeF6(s)
(a) Draw a Lewis structure for XeF6.
(b) If you try to use the VSEPR model to predict the molecular geometry of XeF6, you run into a problem. What is it?
(c) What could you do to resolve the difficulty in part (b)?
(d) The molecule IF7 has a pentagonal bipyramidal structure (five equatorial fluorine atoms at the vertices of a regular pentagon and two axial fluorine atoms). Based on the structure of IF7, suggest a structure for XeF6.