Chem 106   Dr. Rusay

Shapes & Structures
VSEPR Web Lab I

Shapes, Structures & Polarity
To view and manipulate the molecules in this exercise, it is necessary to have MDL's Chime plug-in installed with either Netscape Navigator or Internet Explorer. These can be downloaded by clicking on the following icons:
 

For details and practice using the visualization tool, Chime
See the Chime tutorial:
http://c4.cabrillo.cc.ca.us/projects/chime_tutorial/index.htm

Part I: Refer to the above Web site and complete the form provided to you with answers to questions that relate to the tutorial.
 
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1A
1B 
1C
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2A 
2B 
2C 
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3A 
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4A
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4C 

Part II:

Click on the active link in each of the squares above for a molecule's image. The images must be manipulated in order to get an accurate view of the molecules; not all of the atoms will be visible without doing so. Complete the table provided to you; for each image: 1) Write the molecular formula for the molecule. 2) Identify the number of valence electrons for each atom in the molecule and the total number of electrons for the complete molecule. 3) Draw a Lewis structure that represents the molecule, 4) Describe the shape of the molecule, and to the best of your ability indicate if you think that molecule is polar or non-polar.  For example, 4A: SO2, S=6, O=6, SO2=18, bent shape, polar: see handout for the Lewis structure.
 

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B
C
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© Copyright 2004 R.J. Rusay