Question 1

Specify the hybridization of the nitrogen atom in each of the following, in order. NO3-  N2  NO2-

Accepted Answer

A)   sp2, sp, sp2
B)   sp3, sp, sp
C)   sp2, sp, sp3
D)   sp3, sp2, sp3
E)   none of these

Question 2

Consider the molecular-orbital description of the NO- anion. Which of the following statements is false?

Accepted Answer

A)   The bond energy in NO+ is greater than the bond energy in NO-.
B)   The bond order in NO- is 2.
C)   NO- is isoelectronic with CO.
D)   NO- is paramagnetic.
E)   All of these statements are false.

Question 3

Oxygen is paramagnetic and has a bond order of two. Which of the following represents the ground electronic state for oxygen?

Accepted Answer

A)   
B)   
C)   
D)   A and C are equally probable
E)   None of the above

Question 4

Consider the structure of glycine, the simplest amino acid: 3 sp3 sp2 B)  sp2 sp2 sp2 C)  sp3 sp3 sp3 D)  sp2 sp3 sp2 E)  none of these " class="answers-bank-image d-inline" rel="preload" > Indicate the hybridizations at each N and C atom in the molecule (in sequence from left to right) .

Accepted Answer

A)   sp3 sp3 sp2
B)   sp2 sp2 sp2
C)   sp3 sp3 sp3
D)   sp2 sp3 sp2
E)   none of these

Question 5

Which of the following has the shortest N-O bond?

Accepted Answer

A)   NO2-
B)   N2
C)   NO+
D)   NO3-
E)   none of these

Question 6

What is the hybridization of the central atom in ICl5?

Accepted Answer

A)   sp2
B)   d2sp3
C)   dsp3
D)   sp
E)   sp3 B

Question 7

What is the hybridization of the phosphorus atom in PCl4+?

Accepted Answer

A)   dsp2
B)   sp2d
C)   d2sp3
D)   sp2
E)   sp3

Question 8

Tetracyanoethylene has the skeleton shown here: 2 hybridized? A)  2 B)  4 C)  10 D)  8 E)  6 " class="answers-bank-image d-inline" rel="preload" > From its Lewis structure, determine the following.
-How many of the atoms are sp2 hybridized?

Accepted Answer

A)   2
B)   4
C)   10
D)   8
E)   6

Question 9

Consider the following molecule. (Lone pairs are not drawn in.)  3 B)  sp3 C)  sp D)  sp2 E)  d2sp3 " class="answers-bank-image d-inline" rel="preload" >
-What is the hybridization of the carbon atom that is bonded to chlorine?

Accepted Answer

A)   dsp3
B)   sp3
C)   sp
D)   sp2
E)   d2sp3

Question 10

What is the hybridization of I in ICl2+?

Accepted Answer

A)   sp3
B)   dsp3
C)   sp2
D)   sp
E)   d2sp3

Question 11

In the molecular-orbital description of CO,

Accepted Answer

A)   the bond order is 3.
B)   six molecular orbitals contain electrons.
C)   there are two unpaired electrons.
D)   the highest energy electrons occupy antibonding orbitals.
E)   All of these are false.

Question 12

Which of the following is diamagnetic?

Accepted Answer

A)   F2+
B)   C2+
C)   H2+
D)   N2
E)   N2+

Question 13

The fact that O2 is paramagnetic can be explained by

Accepted Answer

A)   hybridization of atomic orbitals in O2.
B)   the Lewis structure of O2.
C)   the molecular-orbital diagram for O2.
D)   resonance.
E)   a violation of the octet rule.

Question 14

Describing the bonding in C2H6 requires what carbon hybridization?

Accepted Answer

A)   sp
B)   sp3
C)   dsp2
D)   d2sp3
E)   sp2 B

Question 15

Consider the following Lewis structure. (Lone pairs are not drawn in.)  2 sp3 sp2 sp3 B)  sp sp3 sp sp C)  sp3 sp3 sp sp2 D)  sp sp2  sp sp2 E)  sp sp3 sp2 sp " class="answers-bank-image d-inline" rel="preload" > What are the hybridizations of the oxygen atom and of carbon atoms 1, 2, and 4, respectively (order: O C-1 C-2 C-4) ?

Accepted Answer

A)   sp2 sp3 sp2 sp3
B)   sp sp3 sp sp
C)   sp3 sp3 sp sp2
D)   sp sp2  sp sp2
E)   sp sp3 sp2 sp

Question 16

Atoms that are sp3 hybridized form ____ pi bond(s) .

Accepted Answer

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

Question 17

What is the hybridization of the central atom in SF4?

Accepted Answer

A)   dsp3
B)   sp3
C)   d2sp3
D)   sp
E)   sp2

Question 18

What is the hybridization of the I atom in the molecule IF5?

Accepted Answer

A)   sp
B)   sp3
C)   dsp3
D)   sp2
E)   d2sp3

Question 19

Of the following homonuclear diatomic molecules, which is paramagnetic?

Accepted Answer

A)   C2
B)   B2
C)   F2
D)   N2
E)   None of the above B

Question 20

Consider the following molecule. (Lone pairs are not drawn in.)  2 B)  d2sp3 C)  sp D)  sp3 E)  dsp3 " class="answers-bank-image d-inline" rel="preload" >
-What is the hybridization of the nitrogen atom?

Accepted Answer

A)   sp2
B)   d2sp3
C)   sp
D)   sp3
E)   dsp3

Exam 14: Covalent Bonding: Orbitals

Specify the hybridization of the nitrogen atom in each of the following, in order. NO3- N2 NO2-

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Consider the molecular-orbital description of the NO- anion. Which of the following statements is false?

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Oxygen is paramagnetic and has a bond order of two. Which of the following represents the ground electronic state for oxygen?

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Consider the structure of glycine, the simplest amino acid: Indicate the hybridizations at each N and C atom in the molecule (in sequence from left to right) .

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Which of the following has the shortest N-O bond?

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What is the hybridization of the central atom in ICl5?

Correct AnswerverifiedB

What is the hybridization of the phosphorus atom in PCl4+?

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Tetracyanoethylene has the skeleton shown here: From its Lewis structure, determine the following. -How many of the atoms are sp2 hybridized?

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Consider the following molecule. (Lone pairs are not drawn in.) -What is the hybridization of the carbon atom that is bonded to chlorine?

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What is the hybridization of I in ICl2+?

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In the molecular-orbital description of CO,

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Which of the following is diamagnetic?

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The fact that O2 is paramagnetic can be explained by

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Describing the bonding in C2H6 requires what carbon hybridization?

Correct AnswerverifiedB

Consider the following Lewis structure. (Lone pairs are not drawn in.) What are the hybridizations of the oxygen atom and of carbon atoms 1, 2, and 4, respectively (order: O C-1 C-2 C-4) ?

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Atoms that are sp3 hybridized form ____ pi bond(s) .

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What is the hybridization of the central atom in SF4?

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What is the hybridization of the I atom in the molecule IF5?

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Of the following homonuclear diatomic molecules, which is paramagnetic?

Correct AnswerverifiedB

Consider the following molecule. (Lone pairs are not drawn in.) -What is the hybridization of the nitrogen atom?

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Specify the hybridization of the nitrogen atom in each of the following, in order. NO₃^- N₂ NO₂^-

Correct Answer
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Consider the molecular-orbital description of the NO^-anion. Which of the following statements is false?

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What is the hybridization of the central atom in ICl₅?

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B

What is the hybridization of the phosphorus atom in PCl₄⁺?

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Tetracyanoethylene has the skeleton shown here: From its Lewis structure, determine the following. -How many of the atoms are sp² hybridized?

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What is the hybridization of I in ICl₂⁺?

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The fact that O₂ is paramagnetic can be explained by

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Describing the bonding in C₂H₆ requires what carbon hybridization?

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B

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Atoms that are sp³ hybridized form ____ pi bond(s) .

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What is the hybridization of the central atom in SF₄?

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What is the hybridization of the I atom in the molecule IF₅?

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B

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