Adapted by Nelson Nuñez-Rodriguez
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By David W. Ball
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| QUESTION | ANSWER |
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1. Explain why iron and copper have the same Lewis electron dot diagram when they have different numbers of electrons. |
1. Iron has d electrons that typically are not shown on Lewis electron dot diagrams. |
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3. Based on the known trends, what ionic compound from the first column of the periodic table and the next-to-last column of the periodic table should have the highest lattice energy? |
3. LiF |
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5. P2 is not a stable form of phosphorus, but if it were, what would be its likely Lewis electron dot diagram? |
5. It would be like N2:  |
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7. What are the Lewis electron dot diagrams of SO2, SO3, and SO42−? |
7.  |
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9. Which bond do you expect to be more polar—an O–H bond or an N–H bond? |
9. an O–H bond |
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11. Use bond energies to estimate the energy change of this reaction. C3H8 + 5O2 → 3CO2 + 4H2O |
11. −2,000 kJ |
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13. Ethylene (C2H4) has two central atoms. Determine the geometry around each central atom and the shape of the overall molecule. |
13. trigonal planar about both central C atoms |