ch910 1_Part4 - GENERAL CHEMISTRY CHAPTER 9 CHAPTER 10 PART...

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GENERAL CHEMISTRY CHAPTER 9 & CHAPTER 10: PART I – CHEMICAL BONDING P AGE 13 OF 22 Example : ClO 3 Example : CO 2 Example : N 2 Example : NH 4 + Exceptions to the Octet Rule Be shares two electrons to form two single bonds Example : BeH 2 B shares three electrons to form three single bonds Example : BF 3 Expanded octets for elements in Period 3 or below (S and P) Use empty valence d -orbitals to “house” extra electrons Example : SF 6
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GENERAL CHEMISTRY CHAPTER 9 & CHAPTER 10: PART I – CHEMICAL BONDING P AGE 14 OF 22 Example : ICl 3 Oxyacids – “ Acids with Oxygen In oxyacids, the hydrogens are attached to an oxygen Example : HNO 3 Example : H 3 PO 4 Resonance Often more than one Lewis structure for a molecule or a polyatomic ion can be drawn No single Lewis structure can perfectly describe the actual structure of the molecule The actual molecule will have some characteristics of all the valid Lewis structures we can draw
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