Question 1

Determine the electron geometry,molecular geometry and polarity of HCN.

Accepted Answer

A)   eg = trigonal bipyramidal, mg = trigonal planar, nonpolar
B)   eg = octahedral, mg = square planar, nonpolar
C)   eg = tetrahedral, mg = bent, polar
D)   eg = tetrahedral, mg = linear, nonpolar
E)   eg = linear, mg = linear, polarF) A) and B)
G) A) and C)

Question 2

Determine the electron geometry,molecular geometry and polarity of SF4.

Accepted Answer

A)   eg = trigonal bipyramidal, mg = trigonal bipyramidal, nonpolar
B)   eg = tetrahedral, mg = tetrahedral, polar
C)   eg = trigonal bipyramidal, mg = see-saw, polar
D)   eg = octahedral, mg = trigonal bipyramidal, nonpolar
E)   eg = octahedral, mg = octahedral, nonpolarF) C) and D)
G) B) and D)

Question 3

List the following compounds in decreasing electronegativity difference. Br2 H Br K Br

Accepted Answer

A)   K Br > Br2 > H Br
B)   Br2 > H Br > K Br
C)   H Br > K Br > Br2
D)   K Br > H Br > Br2E) All of the above
F) B) and D)

Question 4

How many lone pairs of electrons are on the P atom in P F3?

Accepted Answer

A)   0
B)   1
C)   2
D)   3E) All of the above
F) None of the above

Question 5

Explain why oil and water do not mix.

Accepted Answer

Water molecules are ...

Question 6

Determine the electron geometry,molecular geometry and polarity of HBrO2.

Accepted Answer

A)   eg = trigonal bipyramidal, mg = trigonal planar, nonpolar
B)   eg = octahedral, mg = square planar, nonpolar
C)   eg = tetrahedral, mg = bent, polar
D)   eg = tetrahedral, mg = linear, nonpolar
E)   eg = linear, mg = linear, polarF) All of the above
G) A) and B)

Question 7

Determine the electron geometry (eg) and molecular geometry (mg) of ICl2⁻.

Accepted Answer

A)   eg = tetrahedral, mg = bent
B)   eg = tetrahedral, mg = trigonal pyramidal
C)   eg = trigonal bipyramidal, mg = linear
D)   eg = trigonal bipyramidal, mg = trigonal planar
E)   eg = octahedral, mg = linearF) B) and E)
G) B) and C)

Question 8

Is it possible for a molecule to be nonpolar even though it contains polar bonds?
 Explain your answer and give an example.

Accepted Answer

Yes.The polarity of a molecule depends on the molecular geometry and whether or not all of the dipoles (polar bonds)cancel one another.If the molecular geometry causes all of the dipoles to cancel,the molecule will be nonpolar.An example is CF₄ where there are four polar bonds,but the dipoles sum to 0 making the molecule nonpolar.

Question 9

Draw the best Lewis structure for ClO⁻ and determine the formal charge on chlorine.

Accepted Answer

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

Question 10

Give the number of valence electrons for S I4.

Accepted Answer

A)   28
B)   30
C)   32
D)   34E) A) and D)
F) C) and D)

Question 11

Choose the best Lewis structure for PO43⁻.

Accepted Answer

A)   43⁻. 
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D)     
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B)   43⁻. 
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C)   43⁻. 
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B)     
C)     
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D)   43⁻. 
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E)   43⁻. 
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D)     
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G) A) and C)

Question 12

Of the following elements,which has the lowest electronegativity?

Accepted Answer

A)   Mg
B)   Cl
C)   Ca
D)   BrE) A) and B)
F) All of the above

Question 13

Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom CH3OCH3.

Accepted Answer

A)   eg = tetrahedral, mg = tetrahedral
B)   eg = linear, eg = linear
C)   eg = tetrahedral, mg = bent
D)   eg = trigonal bipyramidal, mg = tetrahedral
E)   eg = octahedral, mg = square planarF) A) and E)
G) None of the above C

Question 14

Choose the bond below that is the strongest.

Accepted Answer

A)   N=O
B)   N-Br
C)   N-O
D)   N-C
E)   N=NF) None of the above
G) B) and D) A

Question 15

Place the following in order of decreasing X-A-X bond angle,where A represents the central atom and X represents the outer atoms in each molecule. CS2 CF4 SCl2

Accepted Answer

A)   CS2 > SCl2 > CF4
B)   SCl2 > CF4 > CS2
C)   CF4 > SCl2 > CS2
D)   CS2 > CF4 > SCl2
E)   CF4 > CS2 > SCl2F) A) and C)
G) A) and D)

Question 16

Using Lewis structures and formal charge,which of the following ions is most stable?
OCN⁻ ONC⁻ NOC⁻

Accepted Answer

A)   OCN⁻
B)   ONC⁻
C)   NOC⁻
D)   None of these ions are stable according to Lewis theory.
E)   All of these compounds are equally stable according to Lewis theory.F) A) and E)
G) A) and B)

Question 17

Choose the best Lewis structure for BF3.

Accepted Answer

A)   3. 
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B)     
C)     
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B)   3. 
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B)     
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C)   3. 
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D)   3. 
A)     
B)     
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E)   3. 
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B)     
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G) A) and E)

Question 18

Draw the Lewis structure for SO42⁻.How many equivalent resonance structures can be drawn?

Accepted Answer

A)   6
B)   2
C)   4
D)   3
E)   8F) C) and D)
G) A) and B)

Question 19

Choose the best Lewis structure for SF4.

Accepted Answer

A)   4. 
A)     
B)     
C)     
D)     
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B)   4. 
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B)     
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C)   4. 
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B)     
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D)   4. 
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B)     
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E)   4. 
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G) None of the above

Question 20

The arsenic atom in AsCl3 would be expected to have a

Accepted Answer

A)   partial positive (δ+)  charge.
B)   partial negative (δ-)  charge.
C)   3+ charge.
D)   3- charge.E) All of the above
F) B) and C)

Exam 6: Chemical Bonding I

Determine the electron geometry,molecular geometry and polarity of HCN.

Correct Answer
verified

Determine the electron geometry,molecular geometry and polarity of SF₄.

Correct Answer
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List the following compounds in decreasing electronegativity difference. Br₂ H Br K Br

Correct Answer
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How many lone pairs of electrons are on the P atom in P F₃?

Correct Answer
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Explain why oil and water do not mix.

Correct Answer
verified
Water molecules are ...
View Answer

Determine the electron geometry,molecular geometry and polarity of HBrO₂.

Correct Answer
verified

Determine the electron geometry (eg) and molecular geometry (mg) of ICl₂⁻.

Correct Answer
verified

Is it possible for a molecule to be nonpolar even though it contains polar bonds? Explain your answer and give an example.

Draw the best Lewis structure for ClO⁻ and determine the formal charge on chlorine.

Correct Answer
verified

Give the number of valence electrons for S I₄.

Correct Answer
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Choose the best Lewis structure for PO₄³⁻.

Correct Answer
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Of the following elements,which has the lowest electronegativity?

Correct Answer
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Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom CH₃OCH₃.

Correct Answer
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C

Choose the bond below that is the strongest.

Correct Answer
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A

Place the following in order of decreasing X-A-X bond angle,where A represents the central atom and X represents the outer atoms in each molecule. CS₂ CF₄ SCl₂

Correct Answer
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Using Lewis structures and formal charge,which of the following ions is most stable? OCN⁻ ONC⁻ NOC⁻

Correct Answer
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Choose the best Lewis structure for BF₃.

Correct Answer
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Draw the Lewis structure for SO₄²⁻.How many equivalent resonance structures can be drawn?

Correct Answer
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Choose the best Lewis structure for SF₄.

Correct Answer
verified

The arsenic atom in AsCl₃ would be expected to have a

Correct Answer
verified

Exam 6: Chemical Bonding I

Determine the electron geometry,molecular geometry and polarity of HCN.

Correct AnswerverifiedShow Answer

Determine the electron geometry,molecular geometry and polarity of SF4.

Correct AnswerverifiedShow Answer

List the following compounds in decreasing electronegativity difference. Br2 H Br K Br

Correct AnswerverifiedShow Answer

How many lone pairs of electrons are on the P atom in P F3?

Correct AnswerverifiedShow Answer

Explain why oil and water do not mix.

Correct AnswerverifiedWater molecules are ...View AnswerShow Answer

Determine the electron geometry,molecular geometry and polarity of HBrO2.

Correct AnswerverifiedShow Answer

Determine the electron geometry (eg) and molecular geometry (mg) of ICl2⁻.

Correct AnswerverifiedShow Answer

Is it possible for a molecule to be nonpolar even though it contains polar bonds? Explain your answer and give an example.

Draw the best Lewis structure for ClO⁻ and determine the formal charge on chlorine.

Correct AnswerverifiedShow Answer

Give the number of valence electrons for S I4.

Correct AnswerverifiedShow Answer

Choose the best Lewis structure for PO43⁻.

Correct AnswerverifiedShow Answer

Of the following elements,which has the lowest electronegativity?

Correct AnswerverifiedShow Answer

Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom CH3OCH3.

Correct AnswerverifiedC

Choose the bond below that is the strongest.

Correct AnswerverifiedA

Place the following in order of decreasing X-A-X bond angle,where A represents the central atom and X represents the outer atoms in each molecule. CS2 CF4 SCl2

Correct AnswerverifiedShow Answer

Using Lewis structures and formal charge,which of the following ions is most stable? OCN⁻ ONC⁻ NOC⁻

Correct AnswerverifiedShow Answer

Choose the best Lewis structure for BF3.

Correct AnswerverifiedShow Answer

Draw the Lewis structure for SO42⁻.How many equivalent resonance structures can be drawn?

Correct AnswerverifiedShow Answer

Choose the best Lewis structure for SF4.

Correct AnswerverifiedShow Answer

The arsenic atom in AsCl3 would be expected to have a

Correct AnswerverifiedShow Answer

Correct Answer
verified

Determine the electron geometry,molecular geometry and polarity of SF₄.

Correct Answer
verified

List the following compounds in decreasing electronegativity difference. Br₂ H Br K Br

Correct Answer
verified

How many lone pairs of electrons are on the P atom in P F₃?

Correct Answer
verified

Correct Answer
verified
Water molecules are ...
View Answer

Determine the electron geometry,molecular geometry and polarity of HBrO₂.

Correct Answer
verified

Determine the electron geometry (eg) and molecular geometry (mg) of ICl₂⁻.

Correct Answer
verified

Correct Answer
verified

Give the number of valence electrons for S I₄.

Correct Answer
verified

Choose the best Lewis structure for PO₄³⁻.

Correct Answer
verified

Correct Answer
verified

Determine the electron geometry (eg) and molecular geometry (mg) of the underlined atom CH₃OCH₃.

Correct Answer
verified
C

Correct Answer
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A

Place the following in order of decreasing X-A-X bond angle,where A represents the central atom and X represents the outer atoms in each molecule. CS₂ CF₄ SCl₂

Correct Answer
verified

Correct Answer
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Choose the best Lewis structure for BF₃.

Correct Answer
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Draw the Lewis structure for SO₄²⁻.How many equivalent resonance structures can be drawn?

Correct Answer
verified

Choose the best Lewis structure for SF₄.

Correct Answer
verified

The arsenic atom in AsCl₃ would be expected to have a

Correct Answer
verified