Chemistry I Chapter 10

Draw the Lewis structure for BrF5. What is the hybridization on the Br atom?

sp3d2

Draw the Lewis structure for SF6. What is the hybridization on the S atom?

sp3d2

How many of the following molecules are polar? XeCl2 COF2 PCl4F SF6

3

How many of the following molecules have sp hybridization on the central atom? C2Cl2 CO2 O3 H2O

2

Draw the Lewis structure for BrCl3. What is the hybridization on the Br atom?

sp3d

Consider the molecule below. Determine the molecular geometry at each of the 2 labeled carbons.

C1 = bent, C2 = trigonal planar

Consider the molecule below. Determine the hybridization at each of the 2 labeled carbons.

C1 = sp2, C2 = sp3

Choose the compound below that contains at least one polar covalent bond, but is nonpolar. SeBr4, HCN, ICl3, CF4

CF4

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

CS2 > CF4 > SCl2

Place the following in order of increasing X-Se-X bond angle, where X represents the outer atoms in each molecule. SeO2 SeCl6 SeF2

SeCl6 < SeF2 < SeO2

Determine the electron geometry (eg) and molecular geometry (mg) of the second carbon in CH3CN.

eg= linear, mg= linear

Determine the electron geometry, molecular geometry and polarity of N2O (N central).

eg= linear, mg=linear, polar

A molecule containing a central atom with sp3 hybridization has a(n) __________ electron geometry.

tetrahedral

A molecule containing a central atom with sp3d hybridization has a(n) __________ electron geometry.

trigonal bipyramidal

Identify the shape that goes with sp3d.

trigonal bipyrimidal

How many of the following molecules are polar? BrCl3 CS2 SiF4 SO3

1

Determine the electron geometry (eg) and molecular geometry (mg) of BrF3.

eg=trigonal bipyramidal, mg= T-shape

Determine the electron geometry (eg) and molecular geometry (mg) of ICl2⁻.

eg=trigonal bipyramidal, mg=linear

Determine the electron geometry (eg) and molecular geometry (mg) of XeF2.

eg=trigonal bipyramidal, mg=linear

Determine the electron geometry (eg) and molecular geometry (mg) of PF5.

eg=trigonal bipyramidal, mg=trigonal bipyramidal

Determine the electron geometry (eg), molecular geometry (mg), and polarity of SO2.

eg=trigonal planar, mg=bent, polar

Determine the electron geometry (eg) and molecular geometry (mg) of CO32⁻.

eg=trigonal planar, mg=trigonal planar

Determine the electron geometry (eg) and molecular geometry(mg) of BCl3.

eg=trigonal planar, mg=trigonal planar

How many of the following molecules have sp3 hybridization on the central atom? XeCl4 CH4 SF4 C2H2

1

Give the approximate bond angle for a molecule with a tetrahedral shape.

109.5 degrees

Give the approximate bond angle for a molecule with a trigonal planar shape.

120 degrees

Consider the molecule below. Determine the hybridization at each of the 3 labeled atoms.

1=sp2, 2=sp3, 3=sp3

Consider the molecule below. Determine the molecular geometry at each of the 3 labeled atoms.

1=trigonal planar, 2=tetrahedral, 3=trigonal pyramidal

How many of the following molecules are polar? XeO2 SiCl2Br2 C2Br2 SeCl6

2

How many of the following molecules have sp3d hybridization on the central atom? SiCl4 BrF5 AsF5 BrF3

2

How many of the following molecules are polar? PCl5 COS XeO3 SeBr2

3

Identify the number of electron groups around a molecule with a tetrahedral shape.

4

Choose the compound below that contains at least one polar covalent bond, but is nonpolar. SBr2, AsCl5, CBr2Cl2, GeH2Br2

AsCl5

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⁺

H2O < H3O⁺ < HCN

Place the following in order of increasing dipole moment. I. BCl3 II. BIF2 III. BClF2

I < III < II

Place the following in order of decreasing dipole moment. I. cis-CHCl=CHCl II. trans-CHCl=CHCI III. cis-CHF=CHF

III > I > II

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⁻

N2O > NO2⁻ > NCl3

Place the following in order of increasing F-A-F bond angle, where A represents the central atom in each molecule. PF3 OF2 PF4⁺

OF2 < PF3 < PF4⁺

Determine the electron geometry, molecular geometry and polarity of SF6 .

eg= octahedral, mg= octahedral, non-polar

Determine the electron geometry, molecular geometry and polarity of TeCl6.

eg=octahedral, mg=octahedral, nonpolar

Determine the electron geometry (eg) and molecular geometry (mg) of XeF4.

eg=octahedral, mg=square planar

Determine the electron geometry (eg) and molecular geometry (mg) of CH3+1.

eg=tetrahedral, mg= trigonal pyramidal

Determine the electron geometry, molecular geometry and polarity of HBrO2 .

eg=tetrahedral, mg=bent, polar

Determine the electron geometry (eg) and molecular geometry (mg) of SiF4.

eg=tetrahedral, mg=tetrahedral

Determine the electron geometry (eg), molecular geometry(mg) and polarity of XeO3.

eg=tetrahedral, mg=trigonal pyramidal, polar

Determine the electron geometry (eg), molecular geometry (mg), and polarity of SO3.

eg=trigonal planar, mg=trigonal planar, nonpolar

A molecule containing a central atom with sp3d2 hybridization has a(n) __________ electron geometry.

octahedral

Draw the Lewis structure for SO3. What is the hybridization on the S atom?

sp2

Draw the Lewis structure for BrO4⁻. What is the hybridization on the Br atom?

sp3

Draw the Lewis structure for OF2. What is the hybridization on the O atom?

sp3