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The geometry of \( \boldsymbol{X} \boldsymbol{e} \boldsymbol{F}_{\boldsymbol{6}} \) is:

1. planar hexagon
2. regular octahedron
3. distorted octahedron
4. square bipyramid

Correct answer: regular octahedron

Solution

XeF6 has six bonding pairs and one lone pair around xenon, giving seven electron domains. The electron-domain arrangement is pentagonal bipyramidal, but the molecular geometry is a distorted octahedron because the lone pair distorts the ideal positions of the fluorine atoms.

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