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10Chapt8part3ST - Covalent Bonding Describe covalent...

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Dr. Lori Stepan Van Der Sluys 1 Chapter 8 Part 3 Covalent Bonding Describe covalent bonding and how it differs from ionic bonding Know how to tell if a substance is covalently bonded Know how to draw Lewis structures Know the two types of multiple bonds discussed in lecture, and how the bond length and bond strength vary. Bond Polarity Be able to describe the difference in location of electron density between non- polar covalent, polar covalent, and ionic bonding. Know the definition of electronegativity. Which is the most electronegative element? Why? What value do we assign to the most electronegative element? Dr. Lori Stepan Van Der Sluys 2 Chapter 8 Part 3 Bond Polarity Continued Which is the least electronegative element? What does electropositive mean? How is electronegativity related to electron affinity? Remember the relative order of electronegativity (For our clambakes never. . .) Be able to calculate the electronegativity difference between two atoms, and decide if the bond is ionic, polar covalent, or non-polar covalent. Know the definition of dipole moment, and what it tells you about a molecule. Be familiar with 2 ways to illustrate polarity ( ! + or -, arrow with positive sign at base) Know how to name ionic and molecular compounds keeping in mind electronegativity
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Dr. Lori Stepan Van Der Sluys 3 Chapter 8 Part 3 Lecture 10: Lewis Structures Read: BLB 8.6–8.8 HW: BLB 8:29, 37, 39, 45, 46, 53, 54; Sup 8:1 Know: Lewis structures valence formal charge resonance structures octet rule exceptions bond energy and length
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