Question 1

Give the electron geometry,molecular geometry,and hybridization for both carbons in CH3COOH.

Accepted Answer

eg = tetrahedral; mg

Question 2

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⁺

Accepted Answer

A)  H3O⁺ 2O 
B)  H3O⁺ 2O 3O⁺ 2O 
D)  H2O 3O⁺ 
E)  H2O 3O⁺ < HCN 
A)  H3O⁺ 2O 
B)  H3O⁺ 2O 3O⁺ 2O 
D)  H2O 3O⁺ 
E)  H2O 3O⁺ < HCN

Question 3

Draw the Lewis structure for the molecule CH3CH2CCH.How many sigma and pi bonds does it contain?

Accepted Answer

A)  11 sigma, 0 pi 
B)  9 sigma, 1 pi 
C)  8 sigma, 3 pi 
D)  9 sigma, 2 pi 
E)  8 sigma, 1 pi 
A)  11 sigma, 0 pi 
B)  9 sigma, 1 pi 
C)  8 sigma, 3 pi 
D)  9 sigma, 2 pi 
E)  8 sigma, 1 pi

Question 4

According to molecular orbital theory,what is an antibonding orbital?

Accepted Answer

An antibonding orbital is formed when 2

Question 5

A molecule with a seesaw molecular geometry has a bond angle of

Accepted Answer

A)  <120° for equatorial bonds and <90° for axial bonds. 
B)  180°. 
C)  <90°. 
D)  120° for equatorial bonds and 90° for axial bonds. 
E)  120°. 
A)  <120° for equatorial bonds and <90° for axial bonds. 
B)  180°. 
C)  <90°. 
D)  120° for equatorial bonds and 90° for axial bonds. 
E)  120°.

Question 6

Is it possible for a molecule to be nonpolar even though it contains polar bonds? Explain your answer and give an example.

Accepted Answer

Yes.The polarity of a molecule depends o

Question 7

The bond angle in NBr3 is

Accepted Answer

A)  107°. 
B)  104.5°. 
C)  120°. 
D)  60°. 
E)  95°. 
A)  107°. 
B)  104.5°. 
C)  120°. 
D)  60°. 
E)  95°.

Question 8

The hybrid orbital set used by the central atom in H3O+ is

Accepted Answer

A)  sp 
B)  sp2. 
C)  sp3. 
D)  sp3d. 
E)  sp3d2. 
A)  sp 
B)  sp2. 
C)  sp3. 
D)  sp3d. 
E)  sp3d2.

Question 9

Identify the number of electron groups around a molecule with sp2 hybridization.

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 10

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

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  0 
A)  1 
B)  2 
C)  3 
D)  4 
E)  0

Question 11

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

Accepted Answer

A)  109.5° 
B)  180° 
C)  120° 
D)  107° 
E)  45° 
A)  109.5° 
B)  180° 
C)  120° 
D)  107° 
E)  45°

Question 12

A molecule,that is sp3d hybridized and has a molecular geometry of T-shaped,has ________ bonding groups and ________ lone pairs around its central atom.

Accepted Answer

A)  5, 1 
B)  4, 2 
C)  4, 1 
D)  3, 2 
E)  2, 3 
A)  5, 1 
B)  4, 2 
C)  4, 1 
D)  3, 2 
E)  2, 3

Question 13

Draw the molecular orbital diagram shown to determine which of the following is most stable.

Accepted Answer

A)  C22⁺ 
B)  N22⁺ 
C)  B2 
D)  C22⁻ 
E)  B22⁺ 
A)  C22⁺ 
B)  N22⁺ 
C)  B2 
D)  C22⁻ 
E)  B22⁺

Question 14

Determine the electron geometry (eg),molecular geometry (mg),and polarity of SF6.

Accepted Answer

A)  eg = trigonal bipyramidal, mg = trigonal bipyramidal, polar 
B)  eg = tetrahedral, mg = tetrahedral, polar 
C)  eg = trigonal bipyramidal, mg = seesaw, polar 
D)  eg = octahedral, mg = trigonal bipyramidal, nonpolar 
E)  eg = octahedral, mg = octahedral, nonpolar 
A)  eg = trigonal bipyramidal, mg = trigonal bipyramidal, polar 
B)  eg = tetrahedral, mg = tetrahedral, polar 
C)  eg = trigonal bipyramidal, mg = seesaw, polar 
D)  eg = octahedral, mg = trigonal bipyramidal, nonpolar 
E)  eg = octahedral, mg = octahedral, nonpolar

Question 15

What are the F-Te-F bond angles in TeF6?

Accepted Answer

A)  60° 
B)  90° 
C)  109.5° 
D)  120° 
A)  60° 
B)  90° 
C)  109.5° 
D)  120°

Question 16

A pilot checks for water in the gas before flying a small airplane.How does she do it?

Accepted Answer

A)  Drain a little bit of gas from the bottom and look for two layers. 
B)  Smell it. 
C)  Shake the wings. 
D)  Pipet a sample from the top of the tank and look for two layers. 
E)  Check the gas gauge. 
A)  Drain a little bit of gas from the bottom and look for two layers. 
B)  Smell it. 
C)  Shake the wings. 
D)  Pipet a sample from the top of the tank and look for two layers. 
E)  Check the gas gauge.

Question 17

The hybrid orbital set used by the central atom in SeF4 is

Accepted Answer

A)  sp 
B)  sp2. 
C)  sp3. 
D)  sp3d. 
E)  sp3d2. 
A)  sp 
B)  sp2. 
C)  sp3. 
D)  sp3d. 
E)  sp3d2.

Question 18

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

Accepted Answer

A)  eg = trigonal planar, mg = trigonal planar 
B)  eg = trigonal bipyramidal, mg = T-shape 
C)  eg = trigonal planar, mg = bent 
D)  eg = trigonal bipyramidal, mg = bent 
E)  eg = tetrahedral, mg = trigonal planar 
A)  eg = trigonal planar, mg = trigonal planar 
B)  eg = trigonal bipyramidal, mg = T-shape 
C)  eg = trigonal planar, mg = bent 
D)  eg = trigonal bipyramidal, mg = bent 
E)  eg = tetrahedral, mg = trigonal planar

Question 19

Determine the electron geometry (eg)and molecular geometry (mg)of NCl3.

Accepted Answer

A)  eg = tetrahedral, mg = linear 
B)  eg = linear, mg = tetrahedral 
C)  eg = trigonal planar, mg = tetrahedral 
D)  eg = linear, mg = linear 
E)  eg = tetrahedral, mg = trigonal pyramidal 
A)  eg = tetrahedral, mg = linear 
B)  eg = linear, mg = tetrahedral 
C)  eg = trigonal planar, mg = tetrahedral 
D)  eg = linear, mg = linear 
E)  eg = tetrahedral, mg = trigonal pyramidal

Question 20

Identify the number of electron groups around a molecule with sp3 hybridization.

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Exam 10: Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Give the electron geometry,molecular geometry,and hybridization for both carbons in CH3COOH.

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⁺

Draw the Lewis structure for the molecule CH3CH2CCH.How many sigma and pi bonds does it contain?

According to molecular orbital theory,what is an antibonding orbital?

A molecule with a seesaw molecular geometry has a bond angle of

Is it possible for a molecule to be nonpolar even though it contains polar bonds? Explain your answer and give an example.

The bond angle in NBr3 is

The hybrid orbital set used by the central atom in H3O+ is

Identify the number of electron groups around a molecule with sp2 hybridization.

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

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

A molecule,that is sp3d hybridized and has a molecular geometry of T-shaped,has ________ bonding groups and ________ lone pairs around its central atom.

Draw the molecular orbital diagram shown to determine which of the following is most stable.

Determine the electron geometry (eg),molecular geometry (mg),and polarity of SF6.

What are the F-Te-F bond angles in TeF6?

A pilot checks for water in the gas before flying a small airplane.How does she do it?

The hybrid orbital set used by the central atom in SeF4 is

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

Determine the electron geometry (eg)and molecular geometry (mg)of NCl3.

Identify the number of electron groups around a molecule with sp3 hybridization.

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Give the electron geometry,molecular geometry,and hybridization for both carbons in CH₃COOH.

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⁺

Draw the Lewis structure for the molecule CH₃CH₂CCH.How many sigma and pi bonds does it contain?

The bond angle in NBr₃ is

The hybrid orbital set used by the central atom in H₃O⁺ is

Identify the number of electron groups around a molecule with sp² hybridization.

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

A molecule,that is sp³d hybridized and has a molecular geometry of T-shaped,has bonding groups and lone pairs around its central atom.

Determine the electron geometry (eg),molecular geometry (mg),and polarity of SF₆.

What are the F-Te-F bond angles in TeF₆?

The hybrid orbital set used by the central atom in SeF₄ is

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

Determine the electron geometry (eg)and molecular geometry (mg)of NCl₃.

Identify the number of electron groups around a molecule with sp³ hybridization.