Question 1

Which of these is the most likely identity of element A in the Lewis dot structure?

Accepted Answer

A) Ca 
B) K 
C) N 
D) Cl 
E) O 
A) Ca 
B) K 
C) N 
D) Cl 
E) O

Question 2

Barium fluoride is often used in glass manufacturing. Which of these is the correct formula and bonding type for barium fluoride?

Accepted Answer

A) BaF, ionic 
B) BaF, covalent 
C) BaF2, ionic 
D) BaF2, covalent 
E) Ba2F, ionic 
A) BaF, ionic 
B) BaF, covalent 
C) BaF2, ionic 
D) BaF2, covalent 
E) Ba2F, ionic

Question 3

What is the molecular geometry of NH4+?

Accepted Answer

A) Trigonal planar 
B) Tetrahedral 
C) Trigonal pyramidal 
D) Bent 
A) Trigonal planar 
B) Tetrahedral 
C) Trigonal pyramidal 
D) Bent

Question 4

What does the V in VSEPR theory stand for?

Accepted Answer

A) Very 
B) Variable 
C) Valence 
D) Vanadium 
E) Volume 
A) Very 
B) Variable 
C) Valence 
D) Vanadium 
E) Volume

Question 5

Which of these is a nonpolar molecule?

Accepted Answer

A) CO 
B) H2O 
C) O3 
D) PCl3 
E) SO3 
A) CO 
B) H2O 
C) O3 
D) PCl3 
E) SO3

Question 6

Electronegativity is:

Accepted Answer

A) the ability of an atom to form positively charged ions. 
B) the ability of an atom to form negatively charged ions. 
C) also called a dipole 
D) the ability of an atom to attract bonding electrons. 
E) the ability of an atom to form polar molecules. 
A) the ability of an atom to form positively charged ions. 
B) the ability of an atom to form negatively charged ions. 
C) also called a dipole 
D) the ability of an atom to attract bonding electrons. 
E) the ability of an atom to form polar molecules.

Question 7

Which of these is not a fundamental postulate of bonding proposed by Lewis?

Accepted Answer

A) Valence electrons are shared in covalent bonding. 
B) The valence shell is involved in chemical bonding. 
C) Atoms bond to achieve a more stable configuration. 
D) Atoms bond to achieve an octet of electrons in the valence shell. 
E) A stable electron configuration has six electrons in the valence shell. 
A) Valence electrons are shared in covalent bonding. 
B) The valence shell is involved in chemical bonding. 
C) Atoms bond to achieve a more stable configuration. 
D) Atoms bond to achieve an octet of electrons in the valence shell. 
E) A stable electron configuration has six electrons in the valence shell.

Question 8

An element which has two valence electrons as an atom will most likely:

Accepted Answer

A) lose 2 electrons to become negatively charged and combine with a cation. 
B) lose 2 electrons to become positively charged and combine with an anion. 
C) gain 2 electrons to become negatively charged and combine with a cation. 
D) gain 2 electrons to become positively charged and combine with an anion. 
E) All of the above can occur. 
A) lose 2 electrons to become negatively charged and combine with a cation. 
B) lose 2 electrons to become positively charged and combine with an anion. 
C) gain 2 electrons to become negatively charged and combine with a cation. 
D) gain 2 electrons to become positively charged and combine with an anion. 
E) All of the above can occur.

Question 9

The molecular geometry of a two atom molecule:

Accepted Answer

A) is always bent. 
B) is always tetrahedral. 
C) is always linear. 
D) depends on the atoms involved. 
A) is always bent. 
B) is always tetrahedral. 
C) is always linear. 
D) depends on the atoms involved.

Question 10

How many lone pairs of electrons are around the central atom in PCl3?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 20 
A) 0 
B) 1 
C) 2 
D) 3 
E) 20

Question 11

Which of these is the correct Lewis dot structure for carbon monoxide?

Accepted Answer

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

Question 12

Which of these molecules contains a triple bond?

Accepted Answer

A) NH3 
B) OCl2 
C) C2H2 
D) H2O 
E) MgO 
A) NH3 
B) OCl2 
C) C2H2 
D) H2O 
E) MgO

Question 13

Which of these is the correct molecular geometry of BF3?

Accepted Answer

A) Linear 
B) Trigonal planar 
C) Tetrahedral 
D) Trigonal pyramidal 
E) Bent 
A) Linear 
B) Trigonal planar 
C) Tetrahedral 
D) Trigonal pyramidal 
E) Bent

Question 14

Which of these is\are polar molecule(s)?
I. PCl3
II. H2O
III. CO2
IV. BF3

Accepted Answer

A) I only 
B) I and II 
C) I, II, and IV 
D) II only 
E) II and IV 
A) I only 
B) I and II 
C) I, II, and IV 
D) II only 
E) II and IV

Question 15

Which of these is the correct formula for aluminum oxide?

Accepted Answer

A) AlO 
B) Al2O 
C) AlO2 
D) Al2O3 
E) Al2O2 
A) AlO 
B) Al2O 
C) AlO2 
D) Al2O3 
E) Al2O2

Question 16

Which of these molecules will have a tetrahedral molecular geometry?

Accepted Answer

A) NH3 
B) N2O 
C) C2H2 
D) CH3Cl 
E) MgO 
A) NH3 
B) N2O 
C) C2H2 
D) CH3Cl 
E) MgO

Question 17

Which of the following is true about ozone?

Accepted Answer

A) Its Lewis structure is best represented with resonance structures. 
B) It reduces the amount of ultraviolet radiation that reached the earth's surface. 
C) It can be broken down by ultraviolet radiation. 
D) All of the above. 
E) None of the above. 
A) Its Lewis structure is best represented with resonance structures. 
B) It reduces the amount of ultraviolet radiation that reached the earth's surface. 
C) It can be broken down by ultraviolet radiation. 
D) All of the above. 
E) None of the above.

Question 18

How many lone pairs of electrons are around the central atom in CH4?

Accepted Answer

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

Question 19

Which of the following molecules is nonpolar?

Accepted Answer

A) CO2 
B) N2 
C) CH4 
D) CCl4 
E) All of the above. 
A) CO2 
B) N2 
C) CH4 
D) CCl4 
E) All of the above.

Question 20

Which of these is the correct molecular geometry of PCl3?

Accepted Answer

A) Linear 
B) Trigonal planar 
C) Tetrahedral 
D) Trigonal pyramidal 
E) Bent 
A) Linear 
B) Trigonal planar 
C) Tetrahedral 
D) Trigonal pyramidal 
E) Bent

Which of these is the most likely identity of element A in the Lewis dot structure?

Barium fluoride is often used in glass manufacturing. Which of these is the correct formula and bonding type for barium fluoride?

What is the molecular geometry of NH₄⁺?

What does the V in VSEPR theory stand for?

Which of these is a nonpolar molecule?

Electronegativity is:

Which of these is not a fundamental postulate of bonding proposed by Lewis?

An element which has two valence electrons as an atom will most likely:

The molecular geometry of a two atom molecule:

How many lone pairs of electrons are around the central atom in PCl₃?

Which of these is the correct Lewis dot structure for carbon monoxide?

Which of these molecules contains a triple bond?

Which of these is the correct molecular geometry of BF₃?

Which of these is\are polar molecule(s)? I. PCl₃ II. H₂O III. CO₂ IV. BF₃

Which of these is the correct formula for aluminum oxide?

Which of these molecules will have a tetrahedral molecular geometry?

Which of the following is true about ozone?

How many lone pairs of electrons are around the central atom in CH₄?

Which of the following molecules is nonpolar?

Which of these is the correct molecular geometry of PCl₃?

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Exam 5: Chemical Bonding

Which of these is the most likely identity of element A in the Lewis dot structure?

Barium fluoride is often used in glass manufacturing. Which of these is the correct formula and bonding type for barium fluoride?

What is the molecular geometry of NH4+?

What does the V in VSEPR theory stand for?

Which of these is a nonpolar molecule?

Electronegativity is:

Which of these is not a fundamental postulate of bonding proposed by Lewis?

An element which has two valence electrons as an atom will most likely:

The molecular geometry of a two atom molecule:

How many lone pairs of electrons are around the central atom in PCl3?

Which of these is the correct Lewis dot structure for carbon monoxide?

Which of these molecules contains a triple bond?

Which of these is the correct molecular geometry of BF3?

Which of these is\are polar molecule(s)? I. PCl3 II. H2O III. CO2 IV. BF3

Which of these is the correct formula for aluminum oxide?

Which of these molecules will have a tetrahedral molecular geometry?

Which of the following is true about ozone?

How many lone pairs of electrons are around the central atom in CH4?

Which of the following molecules is nonpolar?

Which of these is the correct molecular geometry of PCl3?

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology

Filters

What is the molecular geometry of NH₄⁺?

How many lone pairs of electrons are around the central atom in PCl₃?

Which of these is the correct molecular geometry of BF₃?

Which of these is\are polar molecule(s)? I. PCl₃ II. H₂O III. CO₂ IV. BF₃

How many lone pairs of electrons are around the central atom in CH₄?

Which of these is the correct molecular geometry of PCl₃?