Question 1

Which best indicates the direction of the dipole moment in formaldehyde,H2C=O?

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 2

Which drawing best shows the molecular polarity of methylamine,CH3NH2,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 3

The orbital hybridization on the carbon atom in S CN - is

Accepted Answer

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

Question 4

-In the drawing of acetaldehyde,CH3CHO,the largest partial positive 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 5

What is the hybridization of the carbon atom labeled C1?

Accepted Answer

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

Question 6

In which will the O-O bond be made stronger by removing an electron?

Accepted Answer

A) only O2 
B) only O2- 
C) only O22- 
D) all of these 
A) only O2 
B) only O2- 
C) only O22- 
D) all of these

Question 7

What is the bond angle in the following molecular model of H2Te?

Accepted Answer

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

Question 8

What is the hybridization of the oxygen atom labeled O2?

Accepted Answer

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

Question 9

The normal boiling point for H Br  is higher than the normal boiling point for H Cl.This can be explained by

Accepted Answer

A) larger dipole-dipole forces for H Br. 
B) larger dispersion forces for H Br. 
C) larger hydrogen-bond forces for H Br. 
D) larger dipole-dipole forces,larger dispersion forces,and larger hydrogen-bond forces for H Br. 
A) larger dipole-dipole forces for H Br. 
B) larger dispersion forces for H Br. 
C) larger hydrogen-bond forces for H Br. 
D) larger dipole-dipole forces,larger dispersion forces,and larger hydrogen-bond forces for H Br.

Question 10

What are the bond angles in the following molecular model of BrF3?

Accepted Answer

A) two less than 90° and one less than 180° but greater than 90° 
B) 90° and 180° 
C) two less than 90° and one less than 120° but greater than 90° 
D) 90° and 120° 
A) two less than 90° and one less than 180° but greater than 90° 
B) 90° and 180° 
C) two less than 90° and one less than 120° but greater than 90° 
D) 90° and 120°

Question 11

Which of the following molecules will readily form hydrogen bones with H2O?

Accepted Answer

A) H2 
B) C3H8 
C) CH4 
D) CH3OH 
A) H2 
B) C3H8 
C) CH4 
D) CH3OH

Question 12

What geometric arrangement does the molecule have for a central atom that has five charge clouds with two lone pairs?

Accepted Answer

A) tetrahedral 
B) octahedral 
C) T-shaped 
D) trigonal bipyramidal 
A) tetrahedral 
B) octahedral 
C) T-shaped 
D) trigonal bipyramidal

Question 13

What is the O-S-O bond angle in SO3?

Accepted Answer

A) less than 109.5° 
B) 109.5° 
C) 120° 
D) greater than 120° 
A) less than 109.5° 
B) 109.5° 
C) 120° 
D) greater than 120°

Question 14

What is geometry around the carbon atom labeled C1?

Accepted Answer

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

Question 15

What is the geometry around the central atom in the following molecular model of ICl4-?

Accepted Answer

A) trigonal bipyramidal 
B) octahedral 
C) square pyramidal 
D) square planar 
A) trigonal bipyramidal 
B) octahedral 
C) square pyramidal 
D) square planar

Question 16

What are the bond angles in the following molecular model of SO32-?

Accepted Answer

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

Question 17

In liquid pentanol,CH3CH2CH2CH2 ,which intermolecular forces are present?

Accepted Answer

A) Dispersion,hydrogen bonding and dipole-dipole forces are present. 
B) Only dipole-dipole and ion-dipole forces are present. 
C) Only dispersion and dipole-dipole forces are present. 
D) Only hydrogen bonding forces are present. 
A) Dispersion,hydrogen bonding and dipole-dipole forces are present. 
B) Only dipole-dipole and ion-dipole forces are present. 
C) Only dispersion and dipole-dipole forces are present. 
D) Only hydrogen bonding forces are present.

Question 18

Given that O2 is paramagnetic and has a bond order of 2,and its highest occupied molecular orbital is antibonding,what would be the expected bond orders for O22- and O22+?

Accepted Answer

A) 1 for O22- and 3 for O22+ 
B) 3/2 for O22- and 5/2 for O22+ 
C) 5/2 for O22- and 3/2 for O22+ 
D) 3 for O22- and 1 for O22+ 
A) 1 for O22- and 3 for O22+ 
B) 3/2 for O22- and 5/2 for O22+ 
C) 5/2 for O22- and 3/2 for O22+ 
D) 3 for O22- and 1 for O22+

Question 19

Which drawing represents a σ bonding molecular orbital for a homonuclear diatomic molecule?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
A) 
  
B) 
  
C) 
  
D)

Question 20

-In the drawing of acetic acid,CH3CO2H,a partial positive charge (δ+)occurs on

Accepted Answer

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

Exam 8: Covalent Compounds: Bonding Theories and Molecular Structure

Which best indicates the direction of the dipole moment in formaldehyde,H2C=O?

Which drawing best shows the molecular polarity of methylamine,CH3NH2,and the bond polarities that make a major contribution to the overall molecular polarity?

The orbital hybridization on the carbon atom in S CN - is

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

What is the hybridization of the carbon atom labeled C1?

In which will the O-O bond be made stronger by removing an electron?

What is the bond angle in the following molecular model of H2Te?

What is the hybridization of the oxygen atom labeled O2?

The normal boiling point for H Br is higher than the normal boiling point for H Cl.This can be explained by

What are the bond angles in the following molecular model of BrF3?

Which of the following molecules will readily form hydrogen bones with H2O?

What geometric arrangement does the molecule have for a central atom that has five charge clouds with two lone pairs?

What is the O-S-O bond angle in SO3?

What is geometry around the carbon atom labeled C1?

What is the geometry around the central atom in the following molecular model of ICl4-?

What are the bond angles in the following molecular model of SO32-?

In liquid pentanol,CH3CH2CH2CH2 ,which intermolecular forces are present?

Given that O2 is paramagnetic and has a bond order of 2,and its highest occupied molecular orbital is antibonding,what would be the expected bond orders for O22- and O22+?

Which drawing represents a σ bonding molecular orbital for a homonuclear diatomic molecule?

-In the drawing of acetic acid,CH3CO2H,a partial positive charge (δ+)occurs on

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Filters

Which best indicates the direction of the dipole moment in formaldehyde,H₂C=O?

Which drawing best shows the molecular polarity of methylamine,CH₃NH₂,and the bond polarities that make a major contribution to the overall molecular polarity?

The orbital hybridization on the carbon atom in SCN^- is

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

What is the hybridization of the carbon atom labeled C₁?

What is the bond angle in the following molecular model of H₂Te?

What is the hybridization of the oxygen atom labeled O₂?

The normal boiling point for HBr is higher than the normal boiling point for HCl.This can be explained by

What are the bond angles in the following molecular model of BrF₃?

Which of the following molecules will readily form hydrogen bones with H₂O?

What is the O-S-O bond angle in SO₃^?

What is geometry around the carbon atom labeled C₁?

What is the geometry around the central atom in the following molecular model of ICl₄^-?

What are the bond angles in the following molecular model of SO₃^2-?

In liquid pentanol,CH₃CH₂CH₂CH_{2 ,}which intermolecular forces are present?

Given that O₂ is paramagnetic and has a bond order of 2,and its highest occupied molecular orbital is antibonding,what would be the expected bond orders for O₂^2- and O₂²⁺?

-In the drawing of acetic acid,CH₃CO₂H,a partial positive charge (δ+)occurs on