Bonding Part 2 Lewis Structures PDF

Example Draw Lewis structures of cyanate ion, OCN− Calculate the formal charges of all atoms in the Lewis structures you drew. Pick the most likely Lewis structure. Copyright © 2023 Pearson Canada Inc. 9-1 Odd Electron Species – free radicals also consider NO2 nitro...

Example Draw Lewis structures of cyanate ion, OCN− Calculate the formal charges of all atoms in the Lewis structures you drew. Pick the most likely Lewis structure. Copyright © 2023 Pearson Canada Inc. 9-1 Odd Electron Species – free radicals also consider NO2 nitrogen dioxide (or nitrous oxide) # e – = 5 + 6 + 6 = 17 Copyright © 2023 Pearson Canada Inc. 9-2 Incomplete Octets (1 of 3) Copyright © 2023 Pearson Canada Inc. 9-3 Incomplete Octets (2 of 3) Electrostatic potential plots for BH 3 and BF3. Note the significant negative change on the F atoms in BF3. Copyright © 2023 Pearson Canada Inc. 9-4 Incomplete Octets (3 of 3) can complete its octet in another way: via a chemical reaction. Lewis theory predicts that BF3 might react in ways that would complete its octet, and indeed it does. BF3 reacts with NH3 as follows: Copyright © 2023 Pearson Canada Inc. 9-5 9.10 Lewis Structures for Hypercoordinate - Main-group elements in the third row of the periodic Compounds table and beyond - due to their larger size Copyright © 2023 Pearson Canada Inc. 9-6  ionic resonance structures, the octet rule is obeyed. The formal charges are shown for those atoms that do not have a formal charge of 0. In AsF5, there are still five F atoms bonded to As, but as depicted in the previous structure, there are four covalent bonds and one ionic bond, as indicated by adjacent formal charges of +1 and −1 Copyright © 2023 Pearson Canada Inc. 9-7 Hypercoordinate compounds Electrostatic potential maps for AsF5 and SF6. Both have a positive charge near the centre and more negative charge around d the outside F atoms, showing the polarity of these bonds. Copyright © 2023 Pearson Canada Inc. 9-8 Sulfuric Acid (H2SO4) and the Sulfate Dianion (SO42−) (1 of 2) Copyright © 2023 Pearson Canada Inc. 9-9 Sulfuric Acid (H2SO4) and the Sulfate Dianion (SO42−) (2 of 2) Electrostatic potential maps for SO 42– and H2SO4. Copyright © 2023 Pearson Canada Inc. 9 - 10 Example Draw Lewis structures for the bromate ion, BrO3−. Assign formal charges to each atom and determine the Br─O bond order. Copyright © 2023 Pearson Canada Inc. 9 - 11