Question 1

The "octet rule" relates to the number eight because:

Accepted Answer

A)   Only atoms with eight valence electrons undergo chemical reaction.
B)   Ions with charges of +8 and -8 are very stable.
C)   Atoms, during compound formation, frequently obtain eight valence electrons.
D)   All electron subshells can hold eight electrons.E) A) and B)
F) A) and C) C

Question 2

Which one of the following compounds has a formula that contains parentheses?

Accepted Answer

A)   barium carbonate
B)   lithium hydroxide
C)   strontium hydroxide
D)   ammonium hydroxideE) All of the above
F) A) and D)

Question 3

Choose a formula from the response list with where the positive and negative ions present carry the same amount of charge.

Accepted Answer

A)   K3N
B)   AlF3
C)   CaSO4
D)   (NH4) 2SE) B) and C)
F) B) and D)

Question 4

In which of the following pairs of ionic compounds do both members of the pair contain +1 ions?

Accepted Answer

A)   KCl and CaO
B)   Na3N and Li2S
C)   AlCl3 and MgF2
D)   more than one correct response
E)   no correct responseF) None of the above
G) B) and D)

Question 5

For the ion or element combinations of M3+ and X2-, choose the correct formula for the compound produced.

Accepted Answer

A)   MX
B)   M2X
C)   MX2
D)   M2X3E) A) and B)
F) C) and D)

Question 6

For which of the following elements is the listed number of valence electrons correct?

Accepted Answer

A)   Al - 3 valence electrons
B)   Cl - 5 valence electrons
C)   Si - 2 valence electrons
D)   more than one correct response
E)   no correct responseF) A) and C)
G) C) and D)

Question 7

Choose a formula from the response list with -2 charged monoatomic ions present.

Accepted Answer

A)   K3N
B)   AlF3
C)   CaSO4
D)   (NH4) 2SE) None of the above
F) B) and C)

Question 8

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1)  Ionic bonds result from the sharing of one or more pairs of electrons.
(2)  The compound copper(II)  phosphate contains eight oxygen atoms per formula unit.
(3)  Ionic compounds that contain fixed charge metals cannot contain polyatomic ions.

Accepted Answer

A)   All three statements are true.
B)   Two of the three statements are true.
C)   Only one of the statements is true.
D)   None of the statements is true.E) None of the above
F) A) and B)

Question 9

Elements in groups IIA and VIIA of the periodic table would, respectively, be expected to form ions with charges of

Accepted Answer

A)   +2 and +7
B)   -2 and -7
C)   +2 and +1
D)   +2 and -1E) A) and B)
F) All of the above

Question 10

In which of the following pairs of polyatomic ions do both members of the pair have the same charge?

Accepted Answer

A)   sulfate and phosphate
B)   carbonate and hydroxide
C)   ammonium and nitrate
D)   more than one correct response
E)   no correct responseF) B) and E)
G) A) and E)

Question 11

Choose the appropriate number of atoms contained in a formula unit of iron(II)  hydroxide.

Accepted Answer

A)   two atoms per formula unit
B)   three atoms per formula unit
C)   four atoms per formula unit
D)   five or more atoms per formula unitE) A) and C)
F) A) and D) D

Question 12

For representative elements, valence electrons are those electrons located

Accepted Answer

A)   closest to the nucleus
B)   in the outermost subshell
C)   in the outermost shell
D)   in s orbitalsE) B) and D)
F) A) and C)

Question 13

The mechanism for ionic bond formation always involves the transferring of

Accepted Answer

A)   electrons from nonmetallic atoms to metallic atoms
B)   protons from the nucleus of metallic atoms to the nucleus of nonmetallic atoms
C)   sufficient electrons to produce ions of equal but opposite charge
D)   more than one correct response
E)   no correct responseF) A) and E)
G) A) and B)

Question 14

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1)  An atom with the electron configuration 1s22s22p2 possesses two valence electrons.
(2)  The formula of the ionic compounds that contains Ba2+ and N3- ions is Ba2N3.
(3)  The polyatomic ions nitrate and azide are both tetraatomic entities.

Accepted Answer

A)   All three statements are true.
B)   Two of the three statements are true.
C)   Only one of the statements is true.
D)   None of the statements is true.E) B) and D)
F) All of the above

Question 15

Choose a formula from the response list with +1 charged monoatomic ions present.

Accepted Answer

A)   K3N
B)   AlF3
C)   CaSO4
D)   (NH4) 2SE) C) and D)
F) All of the above A

Question 16

The correct formula for the ionic compound that might be formed between Na and As is

Accepted Answer

A)   Na3As
B)   NaAs3
C)   Na2As3
D)   Na3As2E) C) and D)
F) A) and C)

Question 17

How many total electrons are present in a N3- ion?

Accepted Answer

A)   4
B)   7
C)   10
D)   12E) C) and D)
F) A) and D)

Question 18

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1)  If an atom loses one or more electrons, it becomes negatively charged because protons now outnumber electrons.
(2)  Nitrogen, a group VA element, possesses five valence electrons.
(3)  Polyatomic ions are generally not very stable and usually lose their identity during chemical reactions.

Accepted Answer

A)   All three statements are true.
B)   Two of the three statements are true.
C)   Only one of the statements is true.
D)   None of the statements is true.E) A) and B)
F) C) and D)

Question 19

For the electron configuration 1s22s22p63s23p64s23d104p3, choose the appropriate number of valence electrons present from the response list.

Accepted Answer

A)   1 valence electron
B)   3 valence electrons
C)   5 valence electrons
D)   7 valence electronsE) A) and B)
F) None of the above

Question 20

In which of the following compounds is there a one-to-two ratio between positive and negative ions?

Accepted Answer

A)   calcium sulfide
B)   magnesium bromide
C)   lead(IV)  oxide
D)   more than one correct response
E)   no correct responseF) A) and B)
G) A) and E)

Exam 4: Chemical Bonding: the Ionic Bond Model

The "octet rule" relates to the number eight because:

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C

Which one of the following compounds has a formula that contains parentheses?

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Choose a formula from the response list with where the positive and negative ions present carry the same amount of charge.

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In which of the following pairs of ionic compounds do both members of the pair contain +1 ions?

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For the ion or element combinations of M³⁺ and X²^-, choose the correct formula for the compound produced.

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For which of the following elements is the listed number of valence electrons correct?

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Choose a formula from the response list with -2 charged monoatomic ions present.

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Elements in groups IIA and VIIA of the periodic table would, respectively, be expected to form ions with charges of

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In which of the following pairs of polyatomic ions do both members of the pair have the same charge?

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Choose the appropriate number of atoms contained in a formula unit of iron(II) hydroxide.

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D

For representative elements, valence electrons are those electrons located

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The mechanism for ionic bond formation always involves the transferring of

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Choose a formula from the response list with +1 charged monoatomic ions present.

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A

The correct formula for the ionic compound that might be formed between Na and As is

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How many total electrons are present in a N³^- ion?

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For the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³, choose the appropriate number of valence electrons present from the response list.

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In which of the following compounds is there a one-to-two ratio between positive and negative ions?

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Exam 4: Chemical Bonding: the Ionic Bond Model

The "octet rule" relates to the number eight because:

Correct AnswerverifiedC

Which one of the following compounds has a formula that contains parentheses?

Correct AnswerverifiedShow Answer

Choose a formula from the response list with where the positive and negative ions present carry the same amount of charge.

Correct AnswerverifiedShow Answer

In which of the following pairs of ionic compounds do both members of the pair contain +1 ions?

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For the ion or element combinations of M3+ and X2-, choose the correct formula for the compound produced.

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For which of the following elements is the listed number of valence electrons correct?

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Choose a formula from the response list with -2 charged monoatomic ions present.

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Elements in groups IIA and VIIA of the periodic table would, respectively, be expected to form ions with charges of

Correct AnswerverifiedShow Answer

In which of the following pairs of polyatomic ions do both members of the pair have the same charge?

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Choose the appropriate number of atoms contained in a formula unit of iron(II) hydroxide.

Correct AnswerverifiedD

For representative elements, valence electrons are those electrons located

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The mechanism for ionic bond formation always involves the transferring of

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Choose a formula from the response list with +1 charged monoatomic ions present.

Correct AnswerverifiedA

The correct formula for the ionic compound that might be formed between Na and As is

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How many total electrons are present in a N3- ion?

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For the electron configuration 1s22s22p63s23p64s23d104p3, choose the appropriate number of valence electrons present from the response list.

Correct AnswerverifiedShow Answer

In which of the following compounds is there a one-to-two ratio between positive and negative ions?

Correct AnswerverifiedShow Answer

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C

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For the ion or element combinations of M³⁺ and X²^-, choose the correct formula for the compound produced.

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D

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A

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How many total electrons are present in a N³^- ion?

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For the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³, choose the appropriate number of valence electrons present from the response list.

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