PF5 - Phosphorus Pentafluoride:

First draw the Lewis dot structure:
PF5 Lewis Structure
Electron geometry: trigonal bipyramidal. Hybridization: sp3d

Then draw the 3D molecular structure using VSEPR rules:


Decision:
The molecular geometry of PF5 is trigonal bipyramidal with symmetric charge distribution.
Therefore this molecule is nonpolar.

Phosphorus Pentafluoride on Wikipedia.

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