In this video, we will use VSPRE theory to practice the rules for identifying key molecular geometries, including bond angles. Understanding the shape of molecules is a key element in understanding their polarity and reactivity.

Molecular shapes made with PhET's free online website:
https://phet.colorado.edu/sims/html/molecule-shapes/latest/molecule-shapes_en.html

We'll start with the Lewis structure for each molecule, then review each of the following molecular geometries providing models and visualizations, examples, and practice (with answers).
– Linear
– Curved (90 and 120 degree bond angles)
– Trigonal planer
– Trigonal Pyramid
– Tetrahedral
– Trigonal bipyramidal
– Octahedral

The role of lone pairs (unbonded electron pairs) and their VSEPR influence on the shape of molecules will also be discussed in the video.

Molecular shapes made with PhET's free online website:
https://phet.colorado.edu/sims/html/molecule-shapes/latest/molecule-shapes_en.html

Get more chemistry help at: http://www.Breslyn.org.

Drawing/writing done in InkScape. Screenshot taken with Camtasia Studio 4.0. Created on a Dell Dimension laptop with a Wacom digital tablet (Bamboo).

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