One drawback of the Lewis dot structure is that it does not give any information concerning the geometry of the molecule. By looking at the number of bonding groups and lone pairs of electrons around the central atom in a molecule VSEPR theory can be used to predict the overall shape of a molecule.
In the PhET simulation, build a molecule and click on the green box labeled 3D to view a model of the molecule. Either Space Filling or Ball and Stick can be selected. Notice how the geometry of a molecule seems to separate the bonds and electron pairs as much as possible. Match each of the given molecules with the correct geometry. Some molecules can be formed in the PhET simulation so a Lewis structure must be drawn.
Drag the appropriate items to their respective bins.