Molecular Shape Tutorial

General Directions for Manipulating Chime Molecular images.

1.  Right click on the image to get an options menu.

   a.  Choose display  and then Ball & Stick to change the way the molecule is displayed.

   b.  Choose select, mouse click action, angle, to get bond angle information

2. Left click on the image and move the mouse while holding the left click to rotate a molecule  manually.

3. Hold the shift key and left click then move the mouse to zoom in and out.


For each shape on this page determine the following

1.  Write the chemical formula for one of the molecules represented on the page for each shape.

2.  Draw the shape of the molecule in some form of 3-dimensional way.  Represent each atom with its atomic symbol.

3.  A description for each shape based on this format---The ______ shaped molecule has ________ atom(s) bonded to the central atom with _________ unbonded pair(s) of electrons on the central atom.

4.  Determine the bond angle that forms between three atoms in the molecule with the central atom as the vertex of the angle.



Trigonal Planar




Linear Molecules

On the left unbonded pairs of electrons are in pink.  On the right is the same molecule but not showing the unbonded pairs of electrons.

This molecule shows iodine atoms are purple


In this molecule, beryllium is pink and the hydrogen atoms are white

In this molecule  chlorine atoms are in green, iodine atoms are in purple

Back to list of molecular shapes

Back to directions for using Chime Images

This page was created by Susan Eriksen June 28, 2003

National Board Certified Teacher, AYA Science

Westerly High School, Westerly, Rhode Island

For more molecules of this type go to the Okanagan University College Chemistry Web Site

Return to Modeling and Visualization in Chemistry Workshop webpage.