SF5Cl - sulfur monochloride pentafluoride:

First Draw the Lewis Dot Structure:
SF5Cl Lewis Sructure
Electron geometry: octahedral. Hybridization: sp3d2

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

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.
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