Question 1

Of XeF2 and XeF4,the one with the smaller bond angles is ________.

Accepted Answer

Question 2

What is the geometry around the central atom in the following molecular model of H2Se?

Accepted Answer

A) linear 
B) bent 
C) trigonal pyramidal 
D) tetrahedral 
A) linear 
B) bent 
C) trigonal pyramidal 
D) tetrahedral

Question 3

What is the geometry around the central atom in the following molecular model of BrF3?

Accepted Answer

A) trigonal bipyramidal 
B) seesaw 
C) T-shaped 
D) linear 
A) trigonal bipyramidal 
B) seesaw 
C) T-shaped 
D) linear

Question 4

What is the hybridization of the carbon atom labeled C3?

Accepted Answer

A) sp 
B) sp2 
C) sp3 
D) sp4 
A) sp 
B) sp2 
C) sp3 
D) sp4

Question 5

-In the drawing of acetaldehyde,CH3CHO,the largest partial negative charge (δ-)occurs on

Accepted Answer

A) atom (a). 
B) atom (b). 
C) atom (c). 
D) atom (d). 
A) atom (a). 
B) atom (b). 
C) atom (c). 
D) atom (d).

Question 6

Which of the following compounds exhibits hydrogen bonding?

Accepted Answer

A) CH3I 
B) HI  
C) CH3OCH3     
D) CH3NH2   
A) CH3I 
B) HI  
C) CH3OCH3     
D) CH3NH2

Question 7

What is the geometry around the central atom in the following molecular model of BF3?

Accepted Answer

A) linear 
B) bent 
C) trigonal planar 
D) trigonal pyramidal 
A) linear 
B) bent 
C) trigonal planar 
D) trigonal pyramidal

Question 8

A molecule with the formula XF3 where the element X has the hybridization sp3.Which of the following elements could be Y?

Accepted Answer

A) C 
B) P 
C) B 
D) Si 
A) C 
B) P 
C) B 
D) Si

Question 9

Which of the following is not true?

Accepted Answer

A) The sp3 hybrid orbitals are degenerate. 
B) An sp3 hybrid orbital may hold a lone pair of electrons. 
C) An sp3 hybrid orbital may form a sigma bond by overlap with an orbital on another atom. 
D) An sp3 hybrid orbital may form a pi bond by overlap with an orbital on another atom. 
A) The sp3 hybrid orbitals are degenerate. 
B) An sp3 hybrid orbital may hold a lone pair of electrons. 
C) An sp3 hybrid orbital may form a sigma bond by overlap with an orbital on another atom. 
D) An sp3 hybrid orbital may form a pi bond by overlap with an orbital on another atom.

Question 10

Which of the following compounds exhibits only dispersion and dipole-dipole intermolecular interactions?

Accepted Answer

A) Na 
B) HCl 
C) BH3 
D) CH3NHC4H9 
A) Na 
B) HCl 
C) BH3 
D) CH3NHC4H9

Question 11

Which molecule has a central atom that uses the set of hybrid orbitals shown below to form bonds with the non-central atoms?

Accepted Answer

A) H2S 
B) CS2 
C) NO2- 
D) IF2- 
A) H2S 
B) CS2 
C) NO2- 
D) IF2-

Question 12

Which drawing below best represents hydrogen bonding methanol,CH3OH?

Accepted Answer

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

Question 13

Which drawing best accounts for the polarity of water,H2O,and the bond polarities that make a major contribution to the overall molecular polarity?

Accepted Answer

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

Question 14

What is the geometry around the central atom in the following molecular model of I3-?

Accepted Answer

A) trigonal bipyramidal 
B) seesaw 
C) T-shaped 
D) linear 
A) trigonal bipyramidal 
B) seesaw 
C) T-shaped 
D) linear

Question 15

What is the hybridization of the oxygen atom labeled O1?

Accepted Answer

A) sp 
B) sp2 
C) sp3 
D) sp4 
A) sp 
B) sp2 
C) sp3 
D) sp4

Question 16

Which substance in each of the following pairs is expected to have the larger dispersion forces?

Accepted Answer

A) Br2 in set I and n-butane in set II 
B) Br2 in set I and isobutane in set II 
C) I2 in set I and n-butane in set II 
D) I2 in set I and isobutane in set II 
A) Br2 in set I and n-butane in set II 
B) Br2 in set I and isobutane in set II 
C) I2 in set I and n-butane in set II 
D) I2 in set I and isobutane in set II

Question 17

The MO diagram below is appropriate for B2.Based on this diagram,B2

Accepted Answer

A) has a bond order of one and is diamagnetic. 
B) has a bond order of one and is paramagnetic. 
C) has a bond order of two and is diamagnetic. 
D) has a bond order of two and is paramagnetic. 
A) has a bond order of one and is diamagnetic. 
B) has a bond order of one and is paramagnetic. 
C) has a bond order of two and is diamagnetic. 
D) has a bond order of two and is paramagnetic.

Question 18

What is the bond angle in the following molecular model of XeF2?

Accepted Answer

A) less than 120° 
B) 120° 
C) less than 180° but greater than 120° 
D) 180° 
A) less than 120° 
B) 120° 
C) less than 180° but greater than 120° 
D) 180°

Question 19

The VSEPR model predicts the H-B-H bond angle in BH3 to be

Accepted Answer

A) 90°. 
B) 109.5°. 
C) less than 120° but greater than 109.5°. 
D) 120°. 
A) 90°. 
B) 109.5°. 
C) less than 120° but greater than 109.5°. 
D) 120°.

Question 20

The C   O bond in COCl2 can be described as

Accepted Answer

A) a σ bond and a π bond,both involving sp hybrid orbitals on C. 
B) a σ bond involving an sp hybrid orbital on C and a π bond involving a p orbital on C. 
C) a σ bond and a π bond,both involving sp2 hybrid orbitals on C. 
D) a σ bond involving an sp2 hybrid orbital on C and a π bond involving a p orbital on C. 
A) a σ bond and a π bond,both involving sp hybrid orbitals on C. 
B) a σ bond involving an sp hybrid orbital on C and a π bond involving a p orbital on C. 
C) a σ bond and a π bond,both involving sp2 hybrid orbitals on C. 
D) a σ bond involving an sp2 hybrid orbital on C and a π bond involving a p orbital on C.

Exam 8: Covalent Compounds: Bonding Theories and Molecular Structure

Of XeF2 and XeF4,the one with the smaller bond angles is ________.

What is the geometry around the central atom in the following molecular model of H2Se?

What is the geometry around the central atom in the following molecular model of BrF3?

What is the hybridization of the carbon atom labeled C3?

-In the drawing of acetaldehyde,CH3CHO,the largest partial negative charge (δ-)occurs on

Which of the following compounds exhibits hydrogen bonding?

What is the geometry around the central atom in the following molecular model of BF3?

A molecule with the formula XF3 where the element X has the hybridization sp3.Which of the following elements could be Y?

Which of the following is not true?

Which of the following compounds exhibits only dispersion and dipole-dipole intermolecular interactions?

Which molecule has a central atom that uses the set of hybrid orbitals shown below to form bonds with the non-central atoms?

Which drawing below best represents hydrogen bonding methanol,CH3OH?

Which drawing best accounts for the polarity of water,H2O,and the bond polarities that make a major contribution to the overall molecular polarity?

What is the geometry around the central atom in the following molecular model of I3-?

What is the hybridization of the oxygen atom labeled O1?

Which substance in each of the following pairs is expected to have the larger dispersion forces?

The MO diagram below is appropriate for B2.Based on this diagram,B2

What is the bond angle in the following molecular model of XeF2?

The VSEPR model predicts the H-B-H bond angle in BH3 to be

The C O bond in COCl2 can be described as

Chemical Tools: Experimentation and Measurement

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids, solids, and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

Of XeF₂and XeF_4,the one with the smaller bond angles is ________.

What is the geometry around the central atom in the following molecular model of H₂Se?

What is the geometry around the central atom in the following molecular model of BrF₃?

What is the hybridization of the carbon atom labeled C₃?

-In the drawing of acetaldehyde,CH₃CHO,the largest partial negative charge (δ-)occurs on

What is the geometry around the central atom in the following molecular model of BF₃?

A molecule with the formula XF₃ where the element X has the hybridization sp³.Which of the following elements could be Y?

Which drawing below best represents hydrogen bonding methanol,CH₃OH?

Which drawing best accounts for the polarity of water,H₂O,and the bond polarities that make a major contribution to the overall molecular polarity?

What is the geometry around the central atom in the following molecular model of I₃^-?

What is the hybridization of the oxygen atom labeled O₁?

The MO diagram below is appropriate for B₂.Based on this diagram,B₂

What is the bond angle in the following molecular model of XeF₂?

The VSEPR model predicts the H-B-H bond angle in BH₃ to be

The C O bond in COCl₂ can be described as