Chem101 Molecular Models Worksheet By Dr. Cheng-Yu Lai With Answer Key Page 13
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182014Spring CHEM101 Ch9-10 Review Worksheet
Modified by Dr. Cheng-Yu Lai,
NO 2 ⁻
N 2 O
NCl 3
A) NCl 3 > NO 2 ⁻ > N 2 O
B) NO 2 ⁻ > N 2 O > NCl 3
C) N 2 O > NO 2 ⁻ > NCl 3
D) NCl 3 > N 2 O > NO 2 ⁻
E) N 2 O > NCl 3 > NO 2 ⁻
Answer: C
52) How many of the following molecules are polar?
BrCl 3
CS 2
SiF 4
SO 3
A) 1
B) 2
C) 3
D) 4
E) 0
Answer: A
53) Determine the electron geometry (eg), molecular geometry (mg), and polarity of PCl 3 .
A) eg=tetrahedral, mg=bent, polar
B) eg=trigonal planar, mg=trigonal planar, nonpolar
C) eg=linear, mg=linear, nonpolar
D) eg=tetrahedral, mg=trigonal pyramidal, polar
E) eg=trigonal pyramidal, mg=trigonal pyramidal, polar
Answer: D
54) Determine the electron geometry, molecular geometry and polarity of SF 6 .
A) eg=trigonal bipyramidal, mg=trigonal bipyramidal, nonpolar
B) eg=tetrahedral, mg=tetrahedral, polar
C) eg=trigonal bipyramidal, mg=see-saw, polar
D) eg=octahedral, mg=trigonal bipyramidal, nonpolar
E) eg=octahedral, mg=octahedral, nonpolar
Answer: E
55) Determine the electron geometry (eg), molecular geometry(mg) and polarity of XeO 3 .
A) eg=trigonal planar, mg=trigonal planar, nonpolar
B) eg=tetrahedral, mg=trigonal pyramidal, polar
C) eg=trigonal planar, mg=trigonal pyramidal, polar
D) eg=trigonal bipyramidal, mg=trigonal planar, nonpolar
E) eg=octahedral, mg=tetrahedral, nonpolar
Answer: B
56) Place the following in order of increasing dipole moment.
I. BCl 3
II. BIF 2
III. BClF 2
A) I < II = III
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