Question 1

Which of the following is polar?

Accepted Answer

A)   NBr3
B)   XeF4
C)   SBr6
D)   KrF2
E)   BBr3

Question 2

Select the correct molecular structure for PF3.

Accepted Answer

A)   pyramidal
B)   square planar
C)   tetrahedral
D)   octahedral
E)   none of these

Question 3

Choose the compound with the most ionic bond.

Accepted Answer

A)   LiF
B)   RbBr
C)   KBr
D)   KF
E)   NaBr

Question 4

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

Accepted Answer

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

Question 5

Select the correct molecular structure for NO3-.

Accepted Answer

A)   square planar
B)   pyramidal
C)   octahedral
D)   tetrahedral
E)   none of these

Question 6

Select the correct molecular structure for NH3.

Accepted Answer

A)   linear
B)   tetrahedral
C)   pyramidal
D)   bent
E)   none of these

Question 7

The Cl-Kr-Cl bond angle in KrCl4 is closest to

Accepted Answer

A)   120°.
B)   109°.
C)   150°.
D)   90°.
E)   360°.

Question 8

Consider the following molecules. 
I. BF3
II. CHBr3 (C is the central atom.) 
III. Br2
IV. XeCl2
V. CO
VI. SF4
Select the molecule(s)  that fit the given statement.
These molecules violate the octet rule.

Accepted Answer

A)   III, V, VI
B)   I, II, IV, VI
C)   I, IV, VI
D)   I, II, IV
E)   I, III, IV, VI

Question 9

Which of the following molecules has a dipole moment?

Accepted Answer

A)   SCl6
B)   CO2
C)   OF2
D)   BH3
E)   None of these has a dipole moment.

Question 10

Which species must be polar?

Accepted Answer

A)   CO 4 
C)   C2H4 
D)   CO2 
E)   None of the above " class="answers-bank-image d-inline" rel="preload" >
B)   CH4
C)   C2H4
D)   CO2
E)   None of the above

Question 11

Which of the following has the largest radius?

Accepted Answer

A)   Na+
B)   Ne
C)   O2-
D)   Mg2+
E)   F-

Question 12

Use the following electronegativity values to answer the question: 
C 2.5 
Cl 3.2
H 2.2 
N 3.0
O 3.4
This molecule contains a carbon atom with trigonal planar geometry.

Accepted Answer

A)   C2H6
B)   CO2
C)   CH3Cl
D)   CH3CHO
E)   none of these

Question 13

Which of the following elements forms the most ionic bond with chlorine?

Accepted Answer

A)   Ar
B)   Ga
C)   P
D)   I
E)   Cs

Question 14

Which of the following bonds would be the least polar and yet still be considered polar covalent?

Accepted Answer

A)   Mg-S
B)   Ga-S
C)   B-S
D)   P-S
E)   S-S

Question 15

Select the correct molecular structure for XeCl4.

Accepted Answer

A)   square planar
B)   octahedral
C)   tetrahedral
D)   pyramidal
E)   none of these

Question 16

Consider the following molecules. 
I. BF3
II. CHBr3 (C is the central atom.) 
III. Br2
IV. XeCl2
V.CO
VI. SF4
Select the molecule(s)  that fit the given statement.
These molecules have a zero net dipole moment.

Accepted Answer

A)   III, V
B)   III, IV, V
C)   I, III, IV
D)   I, III, IV, VI
E)   none of them

Question 17

Consider the compound crotonaldehyde, whose skeleton is 
-How many electrons must be shown in the Lewis structure of this molecule?

Accepted Answer

A)   32
B)   28
C)   18
D)   24
E)   12

Question 18

The first electron affinity value for oxygen is _______ and the second electron affinity value is ________.

Accepted Answer

A)   favorable (exothermic) , favorable (exothermic) 
B)   More information is needed.
C)   favorable (exothermic) , unfavorable (endothermic) 
D)   unfavorable (endothermic) , favorable (exothermic) 
E)   unfavorable (endothermic) , unfavorable (endothermic)

Question 19

What type of structure does the XeOF2 molecule have?

Accepted Answer

A)   trigonal planar
B)   octahedral
C)   pyramidal
D)   T-shaped
E)   tetrahedral

Question 20

What is the shape of the ICl5 molecule?

Accepted Answer

A)   square pyramid
B)   octahedral
C)   trigonal bipyramid
D)   see-saw
E)   none of these

Exam 13: Bonding: General Concepts

The Cl-Kr-Cl bond angle in KrCl4 is closest to

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Consider the following molecules. I. BF3 II. CHBr3 (C is the central atom.) III. Br2 IV. XeCl2 V.CO VI. SF4 Select the molecule(s) that fit the given statement. These molecules have a zero net dipole moment.

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Select the correct molecular structure for XeCl4.

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Select the correct molecular structure for NH3.

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Consider the compound crotonaldehyde, whose skeleton is -How many electrons must be shown in the Lewis structure of this molecule?

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Select the correct molecular structure for PF3.

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Use the following electronegativity values to answer the question: C 2.5 Cl 3.2 H 2.2 N 3.0 O 3.4 This molecule contains a carbon atom with trigonal planar geometry.

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Which of the following has the largest radius?

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Which of the following is polar?

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What is the shape of the ICl5 molecule?

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Select the correct molecular structure for NO3-.

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

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The first electron affinity value for oxygen is _______ and the second electron affinity value is ________.

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Which of the following molecules has a dipole moment?

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Which species must be polar?

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Which of the following elements forms the most ionic bond with chlorine?

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Choose the compound with the most ionic bond.

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What type of structure does the XeOF2 molecule have?

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Which of the following bonds would be the least polar and yet still be considered polar covalent?

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Consider the following molecules. I. BF3 II. CHBr3 (C is the central atom.) III. Br2 IV. XeCl2 V. CO VI. SF4 Select the molecule(s) that fit the given statement. These molecules violate the octet rule.

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The Cl-Kr-Cl bond angle in KrCl₄ is closest to

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Consider the following molecules. I. BF₃ II. CHBr₃ (C is the central atom.) III. Br₂ IV. XeCl₂ V.CO VI. SF₄ Select the molecule(s) that fit the given statement. These molecules have a zero net dipole moment.

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Select the correct molecular structure for XeCl₄.

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Select the correct molecular structure for NH₃.

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Select the correct molecular structure for PF₃.

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What is the shape of the ICl₅ molecule?

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Select the correct molecular structure for NO₃^-.

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The first electron affinity value for oxygen is _ and the second electron affinity value is __.

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What type of structure does the XeOF₂ molecule have?

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Consider the following molecules. I. BF₃ II. CHBr₃ (C is the central atom.) III. Br₂ IV. XeCl₂ V. CO VI. SF₄ Select the molecule(s) that fit the given statement. These molecules violate the octet rule.

Correct Answer
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