10 - CH 310M/318M Lecture 4 W 1/27/2010 Reading Assignment:...

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CH 310M/318M – Lecture 4 – W 1/27/2010 Reading Assignment : Section 1.8 Graded Homework : HW#01 deadline = 9:00 a.m. on Fri 1/29 HW#02 deadline = 5:00 p.m. on Tue 2/2 Textbook Problems : 1.3-1.5, 1.33-1.37, 1.49, 1.50, 1.65, 1.66 Last Time : Lewis structures VSEPR theory and molecular geometry Today : VSEPR theory (continued…) If you have an excusable conflict for ANY of the three midterm exams, the deadline to sign up to take a conflict exam is 5:00 p.m. on Friday, February 5 . The student ACS section will be selling molecular models, lab notebooks, safety goggles, etc. between 10a & 2p every day this week. Look for their table in the Grand Hallway (2 nd floor) of Welch!!! TA office hours and discussion sessions started this week. See the “I Need Help!!!” page on Blackboard for complete details… Execeptions to the octet rule Electronegativity Types of chemical bonds
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N Cl Cl 3 e groups TETRAHEDRAL N Cl Cl The e groups are arranged around the central atom with TETRAHEDRAL geometry A “bond” to a lone pair is not reasonable! N
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10 - CH 310M/318M Lecture 4 W 1/27/2010 Reading Assignment:...

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