LV; ChemLab 8_ Model Molecular Shapes.docx - ChemLab 8 Model Molecular Shapes Background Covalent bonding occurs when atoms share one or more pairs of

LV; ChemLab 8_ Model Molecular Shapes.docx - ChemLab 8...

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ChemLab 8: Model Molecular Shapes Background: Covalent bonding occurs when atoms share one or more pairs of valence electrons. In the Valence Shell Electron Pair Repulsion theory (VSEPR), the number of atoms bonded ( bonding sites ) to the central atom plus the number of lone pairs on the central atom are used to predict a molecule’s shape. The shape of a molecule is essential for understanding the behavior of the molecule, particularly the property of polarity. 1. What is the maximum number of bonds that any one atom would normally form? Why? 4 because basically 4 sides 2. What is physically different about a triple bond compared to a double or single covalent bond that makes it stronger? Give at least 2 differences. 1. More electrons 2. Longer strand 3. Explain the difference between a lone pair of electrons and a bonding pair of electrons: Lone is where the electrons are nit connected and on its on and shared is vice versa 4. Which pair of electrons do you think would take up more space – a bonding pair or a lone pair? Give your reasoning.
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