Chemistry I Chapter 10

25 July 2022
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question
Give the approximate bond angle for a molecule with a trigonal planar shape.
answer
120 degrees
question
Give the approximate bond angle for a molecule with a tetrahedral shape.
answer
109.5 degrees
question
Determine the electron geometry (eg) and molecular geometry(mg) of BCl3.
answer
eg=trigonal planar, mg=trigonal planar
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Determine the electron geometry (eg) and molecular geometry (mg) of CO32⁻.
answer
eg=trigonal planar, mg=trigonal planar
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Determine the electron geometry (eg) and molecular geometry (mg) of CH3+1.
answer
eg=tetrahedral, mg= trigonal pyramidal
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Determine the electron geometry (eg) and molecular geometry (mg) of SiF4.
answer
eg=tetrahedral, mg=tetrahedral
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Determine the electron geometry (eg) and molecular geometry (mg) of PF5.
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eg=trigonal bipyramidal, mg=trigonal bipyramidal
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Determine the electron geometry (eg) and molecular geometry (mg) of the second carbon in CH3CN.
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eg= linear, mg= linear
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Determine the electron geometry (eg) and molecular geometry (mg) of BrF3.
answer
eg=trigonal bipyramidal, mg= T-shape
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Determine the electron geometry (eg) and molecular geometry (mg) of ICl2⁻.
answer
eg=trigonal bipyramidal, mg=linear
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Determine the electron geometry (eg) and molecular geometry (mg) of XeF2.
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eg=trigonal bipyramidal, mg=linear
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Determine the electron geometry (eg) and molecular geometry (mg) of XeF4.
answer
eg=octahedral, mg=square planar
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Consider the molecule below. Determine the molecular geometry at each of the 2 labeled carbons.
Consider the molecule below. Determine the molecular geometry at each of the 2 labeled carbons.
answer
C1 = bent, C2 = trigonal planar
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Consider the molecule below. Determine the molecular geometry at each of the 3 labeled atoms.
Consider the molecule below. Determine the molecular geometry at each of the 3 labeled atoms.
answer
1=trigonal planar, 2=tetrahedral, 3=trigonal pyramidal
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Place the following in order of increasing X-Se-X bond angle, where X represents the outer atoms in each molecule. SeO2 SeCl6 SeF2
answer
SeCl6 < SeF2 < SeO2
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Place the following in order of increasing F-A-F bond angle, where A represents the central atom in each molecule. PF3 OF2 PF4⁺
answer
OF2 < PF3 < PF4⁺
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Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule. N2O NCl3 NO2⁻
answer
N2O > NO2⁻ > NCl3
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Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule. CS2 CF4 SCl2
answer
CS2 > CF4 > SCl2
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Place the following in order of increasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule. HCN H2O H3O⁺
answer
H2O < H3O⁺ < HCN
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Determine the electron geometry (eg), molecular geometry (mg), and polarity of SO3.
answer
eg=trigonal planar, mg=trigonal planar, nonpolar
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How many of the following molecules are polar? BrCl3 CS2 SiF4 SO3
answer
1
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How many of the following molecules are polar? XeCl2 COF2 PCl4F SF6
answer
3
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How many of the following molecules are polar? XeO2 SiCl2Br2 C2Br2 SeCl6
answer
2
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How many of the following molecules are polar? PCl5 COS XeO3 SeBr2
answer
3
question
Determine the electron geometry (eg), molecular geometry (mg), and polarity of SO2.
answer
eg=trigonal planar, mg=bent, polar
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Determine the electron geometry, molecular geometry and polarity of SF6 .
answer
eg= octahedral, mg= octahedral, non-polar
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Determine the electron geometry, molecular geometry and polarity of TeCl6.
answer
eg=octahedral, mg=octahedral, nonpolar
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Determine the electron geometry (eg), molecular geometry(mg) and polarity of XeO3.
answer
eg=tetrahedral, mg=trigonal pyramidal, polar
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Determine the electron geometry, molecular geometry and polarity of HBrO2 .
answer
eg=tetrahedral, mg=bent, polar
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Choose the compound below that contains at least one polar covalent bond, but is nonpolar. SeBr4, HCN, ICl3, CF4
answer
CF4
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Choose the compound below that contains at least one polar covalent bond, but is nonpolar. SBr2, AsCl5, CBr2Cl2, GeH2Br2
answer
AsCl5
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Place the following in order of increasing dipole moment. I. BCl3 II. BIF2 III. BClF2
answer
I < III < II
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Place the following in order of decreasing dipole moment. I. cis-CHCl=CHCl II. trans-CHCl=CHCI III. cis-CHF=CHF
answer
III > I > II
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Determine the electron geometry, molecular geometry and polarity of N2O (N central).
answer
eg= linear, mg=linear, polar
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A molecule containing a central atom with sp3 hybridization has a(n) __________ electron geometry.
answer
tetrahedral
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A molecule containing a central atom with sp3d hybridization has a(n) __________ electron geometry.
answer
trigonal bipyramidal
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Identify the number of electron groups around a molecule with a tetrahedral shape.
answer
4
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Identify the shape that goes with sp3d.
answer
trigonal bipyrimidal
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A molecule containing a central atom with sp3d2 hybridization has a(n) __________ electron geometry.
answer
octahedral
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Draw the Lewis structure for OF2. What is the hybridization on the O atom?
answer
sp3
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Draw the Lewis structure for SO3. What is the hybridization on the S atom?
answer
sp2
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Draw the Lewis structure for BrO4⁻. What is the hybridization on the Br atom?
answer
sp3
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Draw the Lewis structure for SF6. What is the hybridization on the S atom?
answer
sp3d2
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Draw the Lewis structure for BrF5. What is the hybridization on the Br atom?
answer
sp3d2
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Draw the Lewis structure for BrCl3. What is the hybridization on the Br atom?
answer
sp3d
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Consider the molecule below. Determine the hybridization at each of the 2 labeled carbons.
answer
C1 = sp2, C2 = sp3
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Consider the molecule below. Determine the hybridization at each of the 3 labeled atoms.
answer
1=sp2, 2=sp3, 3=sp3
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How many of the following molecules have sp hybridization on the central atom? C2Cl2 CO2 O3 H2O
answer
2
question
How many of the following molecules have sp3 hybridization on the central atom? XeCl4 CH4 SF4 C2H2
answer
1
question
How many of the following molecules have sp3d hybridization on the central atom? SiCl4 BrF5 AsF5 BrF3
answer
2