Question 1

What is the bond order in He2+ ion?

Accepted Answer

A) 0 
B) 1 
C) 1/2 
D) 2 
A) 0 
B) 1 
C) 1/2 
D) 2

Question 2

What is the molecular geometry of NCl3?

Accepted Answer

A) T-shaped 
B) tetrahedral 
C) trigonal planar 
D) trigonal pyramidal 
A) T-shaped 
B) tetrahedral 
C) trigonal planar 
D) trigonal pyramidal

Question 3

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

Accepted Answer

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

Question 4

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

Accepted Answer

A) SeCl6 2 2 
B) SeF2 2 6 
C) SeF2 6 2 
D) SeO2 2 6 
E) SeCl6 2 2 
A) SeCl6 2 2 
B) SeF2 2 6 
C) SeF2 6 2 
D) SeO2 2 6 
E) SeCl6 2 2

Question 5

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

Accepted Answer

A) eg = trigonal bipyramidal,mg = bent 
B) eg = linear,mg = linear 
C) eg = tetrahedral,mg = linear 
D) eg = trigonal bipyramidal,mg = linear 
E) eg = tetrahedral,mg = bent 
A) eg = trigonal bipyramidal,mg = bent 
B) eg = linear,mg = linear 
C) eg = tetrahedral,mg = linear 
D) eg = trigonal bipyramidal,mg = linear 
E) eg = tetrahedral,mg = bent

Question 6

Identify the shape that goes with sp3d.

Accepted Answer

A) trigonal bipyramidal 
B) octahedral 
C) tetrahedral 
D) trigonal planar 
A) trigonal bipyramidal 
B) octahedral 
C) tetrahedral 
D) trigonal planar

Question 7

Determine the electron geometry (eg)and molecular geometry (mg)of CH31+.

Accepted Answer

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

Question 8

What are the F-Po-F bond angles in PoF6 ?

Accepted Answer

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

Question 9

Determine the hybridization about each carbon atom in the following structure.
CH2CHCCCH3

Accepted Answer

The first 2 C's are

Question 10

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

Accepted Answer

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

Question 11

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

Accepted Answer

A) GeH2Br2 
B) SCl2 
C) AsCl5 
D) CF2Cl2 
E) All of the above are nonpolar and contain a polar covalent bond. 
A) GeH2Br2 
B) SCl2 
C) AsCl5 
D) CF2Cl2 
E) All of the above are nonpolar and contain a polar covalent bond.

Question 12

Match the following.
-XeCl4

Accepted Answer

A) polar 
B) s2p hybridized central atom 
C) see-saw molecular geometry 
D) sp hybridized central atom 
E) nonpolar,but contains a polar covalent bond
F)octahedral electron geometry
G)polar,but contains no polar bonds. 
A) polar 
B) s2p hybridized central atom 
C) see-saw molecular geometry 
D) sp hybridized central atom 
E) nonpolar,but contains a polar covalent bond
F)octahedral electron geometry
G)polar,but contains no polar bonds.

Question 13

Which of the following statements is true?

Accepted Answer

A) The total number of molecular orbitals formed doesn't always equal the number of atomic orbitals in the set. 
B) A bond order of 0 represents a stable chemical bond. 
C) When two atomic orbitals come together to form two molecular orbitals,one molecular orbital will be lower in energy than the two separate atomic orbitals,and one molecular orbital will be higher in energy than the separate atomic orbitals. 
D) Electrons placed in antibonding orbitals stabilize the ion/molecule. 
E) All of the above are true. 
A) The total number of molecular orbitals formed doesn't always equal the number of atomic orbitals in the set. 
B) A bond order of 0 represents a stable chemical bond. 
C) When two atomic orbitals come together to form two molecular orbitals,one molecular orbital will be lower in energy than the two separate atomic orbitals,and one molecular orbital will be higher in energy than the separate atomic orbitals. 
D) Electrons placed in antibonding orbitals stabilize the ion/molecule. 
E) All of the above are true.

Question 14

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

Accepted Answer

A) eg = trigonal bipyramidal,mg = trigonal planar,nonpolar 
B) eg = octahedral,mg = square planar,nonpolar 
C) eg = tetrahedral,mg = trigonal pyramidal,polar 
D) eg = tetrahedral,mg = linear,nonpolar 
E) eg = linear,mg = linear,polar 
A) eg = trigonal bipyramidal,mg = trigonal planar,nonpolar 
B) eg = octahedral,mg = square planar,nonpolar 
C) eg = tetrahedral,mg = trigonal pyramidal,polar 
D) eg = tetrahedral,mg = linear,nonpolar 
E) eg = linear,mg = linear,polar

Question 15

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

Accepted Answer

A) linear 
B) trigonal bipyramidal 
C) octahedral 
D) tetrahedral 
E) bent 
A) linear 
B) trigonal bipyramidal 
C) octahedral 
D) tetrahedral 
E) bent

Question 16

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

Accepted Answer

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 
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

Question 17

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

Accepted Answer

A) octahedral 
B) trigonal bipyramidal 
C) tetrahedral 
D) bent 
E) trigonal planar 
A) octahedral 
B) trigonal bipyramidal 
C) tetrahedral 
D) bent 
E) trigonal planar

Question 18

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

Accepted Answer

eg = tetrahedral;mg

Question 19

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 20

The paramagnetic property of a molecule is due to the presence of unpaired electrons.Which of the following molecules is paramagnetic according to MO theory?

Accepted Answer

A) O2 
B) N2 
C) F2 
D) H2 
A) O2 
B) N2 
C) F2 
D) H2

What is the bond order in He₂⁺ion?

What is the molecular geometry of NCl₃?

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

Place the following in order of increasing X-Se-X bond angle,where X represents the outer atoms in each molecule. SeO₂ SeCl₆SeF₂

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

Identify the shape that goes with sp³d.

Determine the electron geometry (eg)and molecular geometry (mg)of CH₃¹⁺.

What are the F-Po-F bond angles in PoF₆ ?

Determine the hybridization about each carbon atom in the following structure. CH₂CHCCCH₃

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

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

Match the following. -XeCl₄

Which of the following statements is true?

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

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

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

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

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

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

The paramagnetic property of a molecule is due to the presence of unpaired electrons.Which of the following molecules is paramagnetic according to MO theory?

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The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

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Exam 10: Chemical Bonding II: Molecular Shapes, Valence Bond Theory, and

What is the bond order in He2+ ion?

What is the molecular geometry of NCl3?

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

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

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

Identify the shape that goes with sp3d.

Determine the electron geometry (eg)and molecular geometry (mg)of CH31+.

What are the F-Po-F bond angles in PoF6 ?

Determine the hybridization about each carbon atom in the following structure. CH2CHCCCH3

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

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

Match the following. -XeCl4

Which of the following statements is true?

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

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

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

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

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

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

The paramagnetic property of a molecule is due to the presence of unpaired electrons.Which of the following molecules is paramagnetic according to MO theory?

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

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Filters

What is the bond order in He₂⁺ion?

What is the molecular geometry of NCl₃?

Place the following in order of increasing X-Se-X bond angle,where X represents the outer atoms in each molecule. SeO₂ SeCl₆SeF₂

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

Identify the shape that goes with sp³d.

Determine the electron geometry (eg)and molecular geometry (mg)of CH₃¹⁺.

What are the F-Po-F bond angles in PoF₆ ?

Determine the hybridization about each carbon atom in the following structure. CH₂CHCCCH₃

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

Match the following. -XeCl₄

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

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

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

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

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

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