Question 1

Which of the following is the correct Lewis symbol for S?

Accepted Answer

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

Question 2

Draw the Lewis structure for the nitrate anion, NO3F1F1F1S1F1F1F10. Include resonance structures if necessary.

Accepted Answer

@#IMG-DLM& Two other structures should b

Question 3

Sodium nitrite (NaNO2) is often used in meat curing because it prevents bacterial growth. How many major resonance contributing Lewis structures can be drawn for the nitrite anion (NO2F1F1F1S1F1F1F10) ?

Accepted Answer

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

Question 4

Which of the following bonds is primarily ionic? Element
Electronegativity
C
2)5
O
3)5
H
2)1
Li
1)0

Accepted Answer

A) LiF1F1F1S1F1F1F10C 
B) LiF1F1F1S1F1F1F10H 
C) LiF1F1F1S1F1F1F10O 
D) LiF1F1F1S1F1F1F10Li 
E) CF1F1F1S1F1F1F10O 
A) LiF1F1F1S1F1F1F10C 
B) LiF1F1F1S1F1F1F10H 
C) LiF1F1F1S1F1F1F10O 
D) LiF1F1F1S1F1F1F10Li 
E) CF1F1F1S1F1F1F10O

Question 5

Triple bonds________

Accepted Answer

A) involve sharing of 3 total electrons between atoms. 
B) involve sharing of 6 total electrons between atoms. 
C) always occur between 2 metal atoms. 
D) occur only between atoms with 3 valence electrons. 
E) typically occur between hydrogen and another atom. 
A) involve sharing of 3 total electrons between atoms. 
B) involve sharing of 6 total electrons between atoms. 
C) always occur between 2 metal atoms. 
D) occur only between atoms with 3 valence electrons. 
E) typically occur between hydrogen and another atom.

Question 6

Identify which of the following bonds is considered to be ionic: CF1F1F1S1F1F1F10O, CaF1F1F1S1F1F1F10Cl, SF1F1F1S1F1F1F10N, and SiF1F1F1S1F1F1F10O.
Explain why.

Accepted Answer

CaF1F1F1S1F1F1F10Cl is consid

Question 7

Which of the following molecules cannot absorb infrared radiation?

Accepted Answer

A) HCl 
B) CH4 
C) N2 
D) C6H6 
E) CO 
A) HCl 
B) CH4 
C) N2 
D) C6H6 
E) CO

Question 8

What types of bonds form between the chlorine and oxygen atoms of the chlorite ion (ClO2F1F1F1S1F1F1F10) to minimize the formal charge?

Accepted Answer

A) single 
B) between single and double 
C) double 
D) triple 
E) ionic 
A) single 
B) between single and double 
C) double 
D) triple 
E) ionic

Question 9

Which of the following represents the best Lewis structure for dinitrogen oxide? Support your answer with the Lewis structures and formal charges assigned to each atom for these molecules.

Accepted Answer

@#IMG-DLM& The formal charges are zero unless indi

Question 10

Two reasonable Lewis structures for sulfurous acid (H2SO3) are given below. Add the formal charges to each atom.

Accepted Answer

@#IMG-DLM& The formal charges

Question 11

Based on consideration of formal charges, which of the following is the most stable Lewis structure for the azide ion (N3F1F1F1S1F1F1F10)?

Accepted Answer

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

Question 12

In going down a column in the periodic table, the electronegativity ________

Accepted Answer

A) decreases because the valence electrons are further from the nucleus. 
B) increases because the nuclear charge increases. 
C) decreases because the atomic number increases. 
D) increases because the ionization potential increases. 
E) increases because the electron repulsion increases. 
A) decreases because the valence electrons are further from the nucleus. 
B) increases because the nuclear charge increases. 
C) decreases because the atomic number increases. 
D) increases because the ionization potential increases. 
E) increases because the electron repulsion increases.

Question 13

Which type of bonding involves the sharing of valence electrons by two atoms?

Accepted Answer

A) covalent 
B) ionic 
C) polar ionic 
D) intramolecular 
E) metallic 
A) covalent 
B) ionic 
C) polar ionic 
D) intramolecular 
E) metallic

Question 14

Which of the following ions does not have a complete valence-shell octet?

Accepted Answer

A) Al3F1F1F1S1F1F1F10 
B) IF1F1F1S1F1F1F10 
C) Ca2F1F1F1S1F1F1F10 
D) Pb2F1F1F1S1F1F1F10 
E) S2F1F1F1S1F1F1F10 
A) Al3F1F1F1S1F1F1F10 
B) IF1F1F1S1F1F1F10 
C) Ca2F1F1F1S1F1F1F10 
D) Pb2F1F1F1S1F1F1F10 
E) S2F1F1F1S1F1F1F10

Question 15

Which diatomic molecule has the least number of valence electrons?

Accepted Answer

A) O2 
B) N2 
C) NO 
D) Cl2 
E) F2 
A) O2 
B) N2 
C) NO 
D) Cl2 
E) F2

Question 16

What is the formal charge on the central nitrogen atom in dinitrogen sulfide (N2S)?

Accepted Answer

A) 0 
B) (F1F1F1S1F1F1F101) 
C) (F1F1F1S1F1F1F102) 
D) (F1F1F1S1F1F1F101) 
E) (F1F1F1S1F1F1F102) 
A) 0 
B) (F1F1F1S1F1F1F101) 
C) (F1F1F1S1F1F1F102) 
D) (F1F1F1S1F1F1F101) 
E) (F1F1F1S1F1F1F102)

Question 17

Not all the vibrations of carbon dioxide can absorb infrared radiation because ________

Accepted Answer

A) the molecule is not polar. 
B) the molecule possesses a permanent dipole moment. 
C) only some of the vibrations produce a transient dipole moment. 
D) there are no hydrogen atoms in carbon dioxide. 
E) the molecule is linear. 
A) the molecule is not polar. 
B) the molecule possesses a permanent dipole moment. 
C) only some of the vibrations produce a transient dipole moment. 
D) there are no hydrogen atoms in carbon dioxide. 
E) the molecule is linear.

Question 18

Which one of the following molecules or ions contains an exception to the octet rule?

Accepted Answer

A) O2 
B) CNF1F1F1S1F1F1F10 
C) XeCl 
D) ClOF1F1F1S1F1F1F10 
E) SiH4 
A) O2 
B) CNF1F1F1S1F1F1F10 
C) XeCl 
D) ClOF1F1F1S1F1F1F10 
E) SiH4

Question 19

Which of the following molecules contains an exception to the octet rule?

Accepted Answer

A) NO 
B) CO 
C) HBr 
D) I2 
E) N2O 
A) NO 
B) CO 
C) HBr 
D) I2 
E) N2O

Question 20

How many lone-pair electrons are on the central atom of xenon tetrachloride (XeCl4)?

Accepted Answer

A) 2 
B) 4 
C) 8 
D) 10 
E) 6 
A) 2 
B) 4 
C) 8 
D) 10 
E) 6

Exam 8: Chemical Bonds: What Makes a Gas a Greenhouse Gas

Which of the following is the correct Lewis symbol for S?

Draw the Lewis structure for the nitrate anion, NO3. Include resonance structures if necessary.

Sodium nitrite (NaNO2) is often used in meat curing because it prevents bacterial growth. How many major resonance contributing Lewis structures can be drawn for the nitrite anion (NO2) ?

Which of the following bonds is primarily ionic? Element Electronegativity C 2)5 O 3)5 H 2)1 Li 1)0

Triple bonds________

Identify which of the following bonds is considered to be ionic: CO, CaCl, SN, and SiO. Explain why.

Which of the following molecules cannot absorb infrared radiation?

What types of bonds form between the chlorine and oxygen atoms of the chlorite ion (ClO2) to minimize the formal charge?

Which of the following represents the best Lewis structure for dinitrogen oxide? Support your answer with the Lewis structures and formal charges assigned to each atom for these molecules.

Two reasonable Lewis structures for sulfurous acid (H2SO3) are given below. Add the formal charges to each atom.

Based on consideration of formal charges, which of the following is the most stable Lewis structure for the azide ion (N3)?

In going down a column in the periodic table, the electronegativity ________

Which type of bonding involves the sharing of valence electrons by two atoms?

Which of the following ions does not have a complete valence-shell octet?

Which diatomic molecule has the least number of valence electrons?

What is the formal charge on the central nitrogen atom in dinitrogen sulfide (N2S)?

Not all the vibrations of carbon dioxide can absorb infrared radiation because ________

Which one of the following molecules or ions contains an exception to the octet rule?

Which of the following molecules contains an exception to the octet rule?

How many lone-pair electrons are on the central atom of xenon tetrachloride (XeCl4)?

Matter and Energy: The Origin of the Universe

Atoms, Ions, and Molecules: Matter Starts Here

Stoichiometry: Mass, Formulas, and Reactions

Solution Chemistry: The Hydrosphere

Thermochemistry: Energy Changes in Reactions

Properties of Gases: The Air We Breathe

A Quantum Model of Atoms: Waves and Particles

Molecular Geometry: Shape Determines Function

Intermolecular Forces: The Uniqueness of Water

Solutions: Properties and Behavior

Solids: Crystals, Alloys, and Polymers

Chemical Kinetics: Reactions in the Atmosphere

Chemical Equilibrium: How Much Product Does a Reaction Really Make

Acidbase Equilibria: Proton Transfer in Biological Systems

Additional Aqueous Equilibria: Chemistry and the Oceans

Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Electrochemistry: The Quest for Clean Energy

Nuclear Chemistry: Applications to Energy and Medicine

Organic and Biological Molecules: the Compounds of Life

The Main Group Elements: Life and the Periodic Table

Transition Metals: Biological and Medical Applications

Filters

Draw the Lewis structure for the nitrate anion, NO₃^. Include resonance structures if necessary.

Sodium nitrite (NaNO₂) is often used in meat curing because it prevents bacterial growth. How many major resonance contributing Lewis structures can be drawn for the nitrite anion (NO₂^) ?

What types of bonds form between the chlorine and oxygen atoms of the chlorite ion (ClO₂^) to minimize the formal charge?

Two reasonable Lewis structures for sulfurous acid (H₂SO₃) are given below. Add the formal charges to each atom.

Based on consideration of formal charges, which of the following is the most stable Lewis structure for the azide ion (N₃^)?

What is the formal charge on the central nitrogen atom in dinitrogen sulfide (N₂S)?

How many lone-pair electrons are on the central atom of xenon tetrachloride (XeCl₄)?