Using VSEPR Theory to Determine Molecular Shape

Let s apply a stepwise method for using the VSEPR theory to determine a molecular shape from a molecular formula  

Step 2. Assign an electron-group arrangement by counting all electron groups around the central atom, bonding plus nonbonding. 

Step 3. Predict the ideal bond angle from the electron-group arrangement and the direction of any deviation caused by lone pairs or double bonds. 

Step 4. Draw and name the molecular shape by counting bonding groups and nonbonding groups separately. 

Note positions of any lone pairs and double bonds 

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Shapes with Six Electron Groups Using VSEPR Theory to Determine Molecular Shape... 

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