Question 1

The F-B-F bond angle in the BF2- ion is approximately ________.

Accepted Answer

A) 90° 
B) 109.5° 
C) 120° 
D) 180° 
E) 60° 
A) 90° 
B) 109.5° 
C) 120° 
D) 180° 
E) 60°

Question 2

The hybridizations of nitrogen in NF3 and NH3 are ________ and ________, respectively.

Accepted Answer

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

Question 3

There is/are ________ σ bond(s)in the molecule below.

Accepted Answer

A) 1 
B) 2 
C) 12 
D) 13 
E) 18 
A) 1 
B) 2 
C) 12 
D) 13 
E) 18

Question 4

The electron-domain geometry of the AsF6- ion is octahedral. The hybrid orbitals used by the As atom for bonding are ________ orbitals.

Accepted Answer

A) sp2d2 
B) sp3 
C) sp3d 
D) sp3d2 
E) sp2 
A) sp2d2 
B) sp3 
C) sp3d 
D) sp3d2 
E) sp2

Question 5

The highest energy occupied molecular orbital in the C-C bond of the C2 molecule is _____.

Accepted Answer

A) σ2p 
B) σ*1p 
C) π2p 
D) π2s 
E) π*2p 
A) σ2p 
B) σ*1p 
C) π2p 
D) π2s 
E) π*2p

Question 6

The hybridization of the carbon atom in carbon dioxide is ________.

Accepted Answer

A) sp 
B) sp2 
C) sp3 
D) sp3d 
E) sp3d2 
A) sp 
B) sp2 
C) sp3 
D) sp3d 
E) sp3d2

Question 7

Of the molecules below, only ________ is polar.

Accepted Answer

A) CCl4 
B) CH4 
C) SeF4 
D) SiCl4 
A) CCl4 
B) CH4 
C) SeF4 
D) SiCl4

Question 8

The electron-domain geometry and molecular geometry of the nitrite ion are ________ and ________, respectively.

Accepted Answer

A) trigonal bipyramidal, trigonal planar 
B) tetrahedral, trigonal pyramidal 
C) trigonal bipyramidal,T-shaped 
D) trigonal planar, bent 
E) T-shaped, trigonal planar 
A) trigonal bipyramidal, trigonal planar 
B) tetrahedral, trigonal pyramidal 
C) trigonal bipyramidal,T-shaped 
D) trigonal planar, bent 
E) T-shaped, trigonal planar

Question 9

Consider the following species when answering the following questions:
(i) PClS1U1B13S1U1B0 (ii) CClS1U1B14S1U1B0 (iii) TeClS1U1B14S1U1B0 (iv) XeFS1U1B14S1U1B0 (v) SFS1U1B16S1U1B0
-In which of the molecules does the central atom utilize d orbitals to form hybrid orbitals?

Accepted Answer

A) (i)and (ii) 
B) (iii)only 
C) (i)and (v) 
D) (iii), (iv), and (v) 
E) (v)only 
A) (i)and (ii) 
B) (iii)only 
C) (i)and (v) 
D) (iii), (iv), and (v) 
E) (v)only

Question 10

The bond angle marked a in the following molecule is about ________.

Accepted Answer

A) 109.5 
B) 60 
C) 180 
D) 120 
E) 90 
A) 109.5 
B) 60 
C) 180 
D) 120 
E) 90

Question 11

In molecular orbital theory, the stability of a covalent body is related to its ________.

Accepted Answer

The answer of In molecular orbital theory, the stability of...

Question 12

The hybridization of carbon in the H-C   N: molecule is ________.

Accepted Answer

A) sp2 
B) s2p 
C) s3p 
D) sp 
E) sp3 
A) sp2 
B) s2p 
C) s3p 
D) sp 
E) sp3

Question 13

The hybridization of nitrogen in the H-C   N: molecule is ________.

Accepted Answer

A) sp 
B) s2p 
C) s3p 
D) sp2 
E) sp3 
A) sp 
B) s2p 
C) s3p 
D) sp2 
E) sp3

Question 14

The hybridization of orbitals on the central atom in a molecule is sp2. The electron-domain geometry about this central atom is ________.

Accepted Answer

A) octahedral 
B) linear 
C) trigonal planar 
D) trigonal bipyramidal 
E) tetrahedral 
A) octahedral 
B) linear 
C) trigonal planar 
D) trigonal bipyramidal 
E) tetrahedral

Question 15

What are the three bond angles in the trigonal bipyramidal structure?

Accepted Answer

The answer of What are the three bond angles in...

Question 16

A typical triple bond ________.

Accepted Answer

A) consists of one σ bond and two π bonds 
B) consists of three shared electrons 
C) consists of two σ bonds and one π bond 
D) consists of six shared electron pairs 
E) is longer than a single bond 
A) consists of one σ bond and two π bonds 
B) consists of three shared electrons 
C) consists of two σ bonds and one π bond 
D) consists of six shared electron pairs 
E) is longer than a single bond

Question 17

Of the following, ________ appear(s)to gain mass in a magnetic field. B2 N2 O2

Accepted Answer

A) O2 only 
B) N2 only 
C) B2 and N2 
D) N2 and O2 
E) B2 and O2 
A) O2 only 
B) N2 only 
C) B2 and N2 
D) N2 and O2 
E) B2 and O2

Question 18

Using the VSEPR model, the electron-domain geometry of the central atom in O3 is ________.

Accepted Answer

A) linear 
B) trigonal planar 
C) tetrahedral 
D) trigonal bipyramidal 
E) octahedral 
A) linear 
B) trigonal planar 
C) tetrahedral 
D) trigonal bipyramidal 
E) octahedral

Question 19

The π bond in ethylene, H2C   CH2, results from the overlap of ________.

Accepted Answer

A) sp3 hybrid orbitals 
B) s atomic orbitals 
C) sp hybrid orbitals 
D) sp2 hybrid orbitals 
E) p atomic orbitals 
A) sp3 hybrid orbitals 
B) s atomic orbitals 
C) sp hybrid orbitals 
D) sp2 hybrid orbitals 
E) p atomic orbitals

Question 20

When four atomic orbitals are mixed to form hybrid orbitals, how many hybrid orbitals are formed?

Accepted Answer

A) one 
B) six 
C) three 
D) four 
E) five 
A) one 
B) six 
C) three 
D) four 
E) five

Exam 9: Molecular Geometry and Bonding Theories

The F-B-F bond angle in the BF2- ion is approximately ________.

The hybridizations of nitrogen in NF3 and NH3 are ________ and ________, respectively.

There is/are ________ σ bond(s)in the molecule below.

The electron-domain geometry of the AsF6- ion is octahedral. The hybrid orbitals used by the As atom for bonding are ________ orbitals.

The highest energy occupied molecular orbital in the C-C bond of the C2 molecule is _____.

The hybridization of the carbon atom in carbon dioxide is ________.

Of the molecules below, only ________ is polar.

The electron-domain geometry and molecular geometry of the nitrite ion are ________ and ________, respectively.

Consider the following species when answering the following questions: (i) PCl3 (ii) CCl4 (iii) TeCl4 (iv) XeF4 (v) SF6 -In which of the molecules does the central atom utilize d orbitals to form hybrid orbitals?

The bond angle marked a in the following molecule is about ________.

In molecular orbital theory, the stability of a covalent body is related to its ________.

The hybridization of carbon in the H-C N: molecule is ________.

The hybridization of nitrogen in the H-C N: molecule is ________.

The hybridization of orbitals on the central atom in a molecule is sp2. The electron-domain geometry about this central atom is ________.

What are the three bond angles in the trigonal bipyramidal structure?

A typical triple bond ________.

Of the following, ________ appear(s)to gain mass in a magnetic field. B2 N2 O2

Using the VSEPR model, the electron-domain geometry of the central atom in O3 is ________.

The π bond in ethylene, H2C CH2, results from the overlap of ________.

When four atomic orbitals are mixed to form hybrid orbitals, how many hybrid orbitals are formed?

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The F-B-F bond angle in the BF₂^- ion is approximately ________.

The hybridizations of nitrogen in NF₃ and NH₃are and , respectively.

The electron-domain geometry of the AsF₆^- ion is octahedral. The hybrid orbitals used by the As atom for bonding are ________ orbitals.

The highest energy occupied molecular orbital in the C-C bond of the C₂ molecule is _____.

The electron-domain geometry and molecular geometry of the nitrite ion are and , respectively.

Consider the following species when answering the following questions: (i) PCl₃ (ii) CCl₄ (iii) TeCl₄ (iv) XeF₄ (v) SF₆ -In which of the molecules does the central atom utilize d orbitals to form hybrid orbitals?

The hybridization of orbitals on the central atom in a molecule is sp². The electron-domain geometry about this central atom is ________.

Of the following, ________ appear(s)to gain mass in a magnetic field. B₂ N₂ O₂

Using the VSEPR model, the electron-domain geometry of the central atom in O₃ is ________.

The π bond in ethylene, H₂C CH₂, results from the overlap of ________.