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Unformatted text preview: Chemistry 2070 Assignment 6 3 1
Due: Friday, October'24' @2:00pm Name lg lr_____—_— Lab TA Lab Day/Time Practice Problems. ha t r11' 9 11 13 15 19 23 2 29 1 . 1. Write a Lewis structure for O3 (ozone) and denote formal charges on each atom. Predict its molecular
shape and bond angle using the VSEPR method. Consider only one resonance form and for it discuss the
electronic structure of O3 in terms of hybridization at the central oxygen atom and the number of o and In
electrons. Is the molecule polar? Predict the relative O-O bond lengths in 02 and 03. 2. Identify the hybrid orbitals ( e. g._. sp". spiel etc.) used by the atom in boldface type in each of the following molecules: F l
a)BF3 5/1 F’BPF O
b) AsF3 5/93 VIP“?
c) (Guam: 5/; ‘9 C ‘ 3c ““5 P
msr6 5/06.}; IrK55"
Ff. HP in
e) SeF3+ 5/,3 F (51 ..
/ / F
f) CH3NNCH 5/1 F F ,V A:
3 I S ‘6”
c“ #3:: 3
g) (CH3)2CC(CH3)2 J") ‘1‘ ; \ C , 6113
—-c. h) W3 cu; V48 ids-CEc—Clls j; 3. Draw a molecular orbital diagram for the homonuclear diatomic molecule N2“, label the atomic orbitals (.AOs) that form the molecular orbitals (M05), and the molecular orbitals as 0 or as; bonding (b) or
Y! antibonding (*). Show how electrons from the A05 distribute in the MOs. Would the ions NJ and N; be expected to have shorter or longer bonds compared to N2? Why? @
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8' 50:3? a 89ft. ﬂan/VA- 291 7 4 o If 4. Phencyclidine. shown below, is also known as the street drug PCP. It causes hallucinogenic effects by
M ”5 blocking access of neurotransmitters to their cell-surface receptors in synapses. The molecule is depicted in
a abbreviated form. where line intersections designate carbon atoms, and hydrogen atoms that complete the
carbon valences are not shown. Designate the hybridization (eg. 5133, etc.) and geometry (e. g. trigonal, etc.)
about each non-hydrogen atom in PCP. Also draw in the lone-pair electrons and hydrogen atoms that are not
represented in the bonding scheme. ...
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- Fall '05