PCl3 Molecular Geometry / Shape and Bond Angles

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A quick explanation of the molecular geometry of PCl3 including a description of the PCl3 bond angles.

Looking at the PCl3 Lewis structure we can see that there are three atoms attached to the central Phosphorus (P) atom as well as a lone pair of electrons. Based on VSEPR Theory (Valence Shell Electron Pair Repulsion Theory) the electron clouds on atoms and lone pair of electrons around the P atom will repel each other. As a result they will be pushed apart giving the PCl3 molecule a trigonal pyramidal geometry or shape.

The PCl3 bond angle will be about 109 degrees since it has a trigonal pyramidal molecular geometry.

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Drawing/writing done in InkScape. Screen capture done with Camtasia Studio 4.0. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo).
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So would this have 4 or 3 electron domains?

sunshineyang
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