SF₅Cl - sulfur monochloride pentafluoride:

First Draw the Lewis Dot Structure:

Electron geometry: octahedral. Hybridization: sp³d²

Next Draw the 3D structure based on VSEPR rules:
Click and drag the molecle to rotate it.

Decision:
The molecular geometry of SF₅Cl is octahedral and the charge distribution on the central atom is asymmetric; the dipoles do not "cancel out".
Therefore SF₅Cl is polar.

This is a somewhat rare molecule, but you can find a little info on it here: Sulfur Hexafluoride.
Back to Molecular Geometries & Polarity Tutorial: Molecular Geometry & Polarity Tutorial.
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