NOCl - Nitrosyl Chloride:

First draw the Lewis dot structure:

Electron geometry: trigonal planar. Hybridization: sp²

Then draw the 3D molecular structure using VSEPR rules:


Decision:
The molecular geometry of NOCl is bent (or angular) with an asymmetric charge distribution on the central atom.
Therefore this molecule is polar.

Although this compound could be named as nitrogen monoxide monochloride, it is commonly known as Nitrosyl Chloride.
More info: Nitrosyl Chloride on Wikipedia.

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