02_Lewis_Struct_2018_Sept10.pdf - Chapter 2 Chemical...

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Chapter 2 Chemical Bonding and Lewis Structures 2
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Online Quiz due this Wednesday Before 12PM. Available on Canvas You have two attempts, your final mark will be the highest of the two. Your second attempt will have different questions Announcements
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Bond Order is estimated as the number of bonding pairs of electrons between two atoms bond order = 1 for a single bond = 2 for a double bond = 3 for a triple bond Bond Length is the distance between the two nuclei participating in the bond Bond Dissociation Energy is the amount of energy required to break a particular bond 2.8 Describing a Bond
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Examples of the relationship of bond order, bond length and bond dissociation energy Table 2.1 2.8
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Three Exceptions to the Octet Rule 1. Electron Deficient Species Some elements in Group 13 can have just six electrons in their valence shell. Boron trifluoride 2.14
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2. Hypervalent Species (having an expanded octet) Species containing elements of the third and later periods of the p -block sometimes have more than an octet of electrons.
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