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Molecule Shapes MODEL 1: Molecule Shapes Simulation (http://phet.colorado.edu/en/simulation/molecule-‐shapes) PART I: ELECTRON DOMAINS 1. Explore the Model screen of the simulation. As you explore, answer the following questions. a. How does adding an atom affect the position of existing atoms or lone pairs? b. How does adding a lone pair affect the position of existing atoms and lone pairs? 2. Is the effect of adding bonded atoms and lone pairs to the central atom similar? Explain why this could be the case. We can think of a bond or a lone pair of electrons as a “domain” of electrons. Single bonds, double bonds, and triple bonds each count as one
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