AsF5 - Arsenic Pentafluoride:

First draw the Lewis dot structure:
AsF5 Lewis Structure
Electron geometry: trigonal bipyramidal. Hybridization: sp3d

Then draw the 3D molecular structure using VSEPR rules:


Decision:
The molecular geometry of AsF5 is trigonal bipyramidal with symmetric charge distribution on the central atom.
Therefore this molecule is nonpolar.

Arsenic Pentafluoride on Wikipedia.

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