Question 1

From the information given below, calculate the heat of combustion of methane(CH4)(in kJ/mol)Start by writing the balanced equation.

Accepted Answer

CH₄ + 2O₂ → CO₂ + 2H₂O ΔH_combusion = (4 mol

Question 2

The ion PO43- has __________ valence electrons.

Accepted Answer

A) 14 
B) 24 
C) 27 
D) 29 
E) 32 
A) 14 
B) 24 
C) 27 
D) 29 
E) 32

Question 3

What is the electron configuration for the Co2+ ion?

Accepted Answer

A) [Ar]4s13d6 
B) [Ar]3d7 
C) [Ar]3d5 
D) [Ar]4s23d9 
E) [Ne]3s23p10 
A) [Ar]4s13d6 
B) [Ar]3d7 
C) [Ar]3d5 
D) [Ar]4s23d9 
E) [Ne]3s23p10

Question 4

To convert from one resonance structure to another, __________.

Accepted Answer

A) only atoms can be moved 
B) electrons and atoms can both be moved 
C) only electrons can be moved 
D) neither electrons nor atoms can be moved 
E) electrons must be added 
A) only atoms can be moved 
B) electrons and atoms can both be moved 
C) only electrons can be moved 
D) neither electrons nor atoms can be moved 
E) electrons must be added

Question 5

How many equivalent resonance forms can be drawn for CO32-(carbon is the central atom)?

Accepted Answer

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

Question 6

Which ion below has a noble gas electron configuration?

Accepted Answer

A) Li2+ 
B) Be2+ 
C) B2+ 
D) C2+ 
E) N2- 
A) Li2+ 
B) Be2+ 
C) B2+ 
D) C2+ 
E) N2-

Question 7

What is the maximum number of double bonds that a carbon atom can form?

Accepted Answer

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

Question 8

Which of the following would have to lose three electrons in order to achieve a noble gas electron configuration? Si Mg Al Cl P

Accepted Answer

A) Si, P 
B) Al 
C) P 
D) Cl 
E) Mg, Al, P 
A) Si, P 
B) Al 
C) P 
D) Cl 
E) Mg, Al, P

Question 9

Of the ions below, only __________ has a noble gas electron configuration.

Accepted Answer

A) S3- 
B) O2+ 
C) I+ 
D) K- 
E) Cl- 
A) S3- 
B) O2+ 
C) I+ 
D) K- 
E) Cl-

Question 10

What species has the electron configuration [Ar]3d4?

Accepted Answer

A) Mn2+ 
B) Cr2+ 
C) V3+ 
D) Fe3+ 
E) K+ 
A) Mn2+ 
B) Cr2+ 
C) V3+ 
D) Fe3+ 
E) K+

Question 11

Using the noble gas shorthand notation, write the electron configuration for Fe+3.

Accepted Answer

Question 12

Of the atoms below, __________ is the least electronegative.

Accepted Answer

A) Ba 
B) Be 
C) Mg 
D) Sr 
E) Ca 
A) Ba 
B) Be 
C) Mg 
D) Sr 
E) Ca

Question 13

Which of the following has the bonds correctly arranged in order of increasing polarity?

Accepted Answer

A) Be-F, Mg-F, N-F, O-F 
B) O-F, N-F, Be-F, Mg-F 
C) O-F, Be-F, Mg-F, N-F 
D) N-F, Be-F, Mg-F, O-F 
E) Mg-F, Be-F, N-F, O-F 
A) Be-F, Mg-F, N-F, O-F 
B) O-F, N-F, Be-F, Mg-F 
C) O-F, Be-F, Mg-F, N-F 
D) N-F, Be-F, Mg-F, O-F 
E) Mg-F, Be-F, N-F, O-F

Question 14

The ability of an atom in a molecule to attract electrons is best quantified by the __________.

Accepted Answer

A) paramagnetism 
B) diamagnetism 
C) electronegativity 
D) electron change-to-mass ratio 
E) first ionization potential 
A) paramagnetism 
B) diamagnetism 
C) electronegativity 
D) electron change-to-mass ratio 
E) first ionization potential

Question 15

In the molecule below, which atom has the largest partial negative charge? Cl
∣
F- C -Br
∣
I

Accepted Answer

A) Cl 
B) F 
C) Br 
D) I 
E) C 
A) Cl 
B) F 
C) Br 
D) I 
E) C

Question 16

The electron configuration that corresponds to the Lewis symbol, :   . is __________.

Accepted Answer

The answer of The electron configuration that corresponds to the...

Question 17

Based on the octet rule, boron will most likely form a __________ ion.

Accepted Answer

A) B3- 
B) B1+ 
C) B3+ 
D) B2+ 
E) B2- 
A) B3- 
B) B1+ 
C) B3+ 
D) B2+ 
E) B2-

Question 18

The formal charge on carbon in the molecule below is __________.

Accepted Answer

A) 0 
B) +1 
C) +2 
D) +3 
E) -1 
A) 0 
B) +1 
C) +2 
D) +3 
E) -1

Question 19

Based on the octet rule, aluminum most likely forms an __________ ion.

Accepted Answer

A) Al3+ 
B) Al4+ 
C) Al4- 
D) Al+ 
E) Al- 
A) Al3+ 
B) Al4+ 
C) Al4- 
D) Al+ 
E) Al-

Question 20

The Lewis structure of PF3 shows that the central phosphorus atom has __________ nonbonding and __________ bonding electron pairs.

Accepted Answer

A) 2, 2 
B) 1, 3 
C) 3, 1 
D) 1, 2 
E) 3, 3 
A) 2, 2 
B) 1, 3 
C) 3, 1 
D) 1, 2 
E) 3, 3

Exam 8: Basic Concepts of Chemical Bonding

From the information given below, calculate the heat of combustion of methane(CH4)(in kJ/mol)Start by writing the balanced equation.

The ion PO43- has __________ valence electrons.

What is the electron configuration for the Co2+ ion?

To convert from one resonance structure to another, __________.

How many equivalent resonance forms can be drawn for CO32-(carbon is the central atom)?

Which ion below has a noble gas electron configuration?

What is the maximum number of double bonds that a carbon atom can form?

Which of the following would have to lose three electrons in order to achieve a noble gas electron configuration? Si Mg Al Cl P

Of the ions below, only __________ has a noble gas electron configuration.

What species has the electron configuration [Ar]3d4?

Using the noble gas shorthand notation, write the electron configuration for Fe+3.

Of the atoms below, __________ is the least electronegative.

Which of the following has the bonds correctly arranged in order of increasing polarity?

The ability of an atom in a molecule to attract electrons is best quantified by the __________.

In the molecule below, which atom has the largest partial negative charge? Cl ∣ F- C -Br ∣ I

The electron configuration that corresponds to the Lewis symbol, : . is __________.

Based on the octet rule, boron will most likely form a __________ ion.

The formal charge on carbon in the molecule below is __________.

Based on the octet rule, aluminum most likely forms an __________ ion.

The Lewis structure of PF3 shows that the central phosphorus atom has __________ nonbonding and __________ bonding electron pairs.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

From the information given below, calculate the heat of combustion of methane(CH₄)(in kJ/mol)Start by writing the balanced equation.

The ion PO₄^3-has __________ valence electrons.

What is the electron configuration for the Co²⁺ ion?

How many equivalent resonance forms can be drawn for CO₃^2-(carbon is the central atom)?

What species has the electron configuration [Ar]3d⁴?

Using the noble gas shorthand notation, write the electron configuration for Fe⁺³.

The Lewis structure of PF₃ shows that the central phosphorus atom has nonbonding and bonding electron pairs.