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ch8 lecture 2 for posting

# ch8 lecture 2 for posting - Special early registration for...

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Special early registration for current chem 102 students into chem 104: today and Monday only! =========================== Exam 3 Average = 12.53 (70%) Standard Deviation = 3.45

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In the Lewis structure for ICl 4 ¯, the central Iodine atom has ____ electrons in its valence shell. . 1 8 . 2 10 . 3 12 . 4 14
Consider the molecules below. How many have a dipole moment? BF 3 CS 2 ICl 4 A) 0  B) 1  C) 2   D) 3 Trigonal planar Square planar Linear

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Rules Governing Formal Charge The sum of the formal charges of all atoms in a given molecule or ion must equal the overall charge on that species.
What is the formal charge on the chlorine atom in perchlorate, ClO 4 -1 ? (chlorine is central atom) a) -1 b) 0 c) +1 d) +2 e) +3 S = N – A N = 5x8=40 A = 4x6 + 7 + 1 = 32 S = 40 – 32 = 8 4 bonds

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Formal Charge can be used to consider relative importance of resonance structures. Consider two possible structures for CO 2 a) O=C=O b) O≡C-O The formal charges on the atoms in a) are 1.+1,0,-1 2.0,0,0 3.-1,1,-1
Formal Charge can be used to consider relative importance of resonance structures. Consider two possible structures for CO 2 a) O=C=O b) O≡C-O The formal charges on the atoms in b) are 1.+1,0,-1 2.0,0,0 3.-1,1,-1

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Rules Governing Formal Charge If nonequivalent Lewis structures exist for a
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ch8 lecture 2 for posting - Special early registration for...

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