Question 1

The hybridization of the lead atom in PbCl4 is

Accepted Answer

A) dsp2 
B) sp2 
C) d2sp3 
D) dsp3 
E) none of these 
A) dsp2 
B) sp2 
C) d2sp3 
D) dsp3 
E) none of these

Question 2

The bond order for CN- is 2.

Accepted Answer

A) True 
 B)False

Question 3

What is the bond order of C2+?

Accepted Answer

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

Question 4

The configuration ( $\sigma$2s)2( $\sigma$2s*)2($\pi$2py)1($\pi$2px)1 is the molecular orbital description for the ground state of

Accepted Answer

A) Li2+ 
B) Be2 
C) B2 
D) B22- 
E) C2 
A) Li2+ 
B) Be2 
C) B2 
D) B22- 
E) C2

Question 5

Which of the following does not contain at least one pi bond?

Accepted Answer

A) H2CO 
B) CO2 
C) C2H4 
D) C2H6 
E) All of the above (A-
D) contain at least one pi bond. 
A) H2CO 
B) CO2 
C) C2H4 
D) C2H6 
E) All of the above (A-
D) contain at least one pi bond.

Question 6

The C-C-H bond angles in ethylene,C2H4,are 120°.What is the hybridization of the carbon orbitals?

Accepted Answer

Question 7

Which statement about N2 is false?

Accepted Answer

A) It is a gas at room temperature. 
B) The oxidation state is +3 on one N and -3 on the other. 
C) It has one sigma and two pi bonds between the two atoms. 
D) It can combine with H2 to form NH3. 
E) It has two pairs of nonbonding electrons. 
A) It is a gas at room temperature. 
B) The oxidation state is +3 on one N and -3 on the other. 
C) It has one sigma and two pi bonds between the two atoms. 
D) It can combine with H2 to form NH3. 
E) It has two pairs of nonbonding electrons.

Question 8

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

Accepted Answer

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

Question 9

The mixing of native atomic orbitals to form special orbitals for bonding is called __________.

Accepted Answer

The answer of The mixing of native atomic orbitals to...

Question 10

Which of the following electron distributions among the molecular orbitals best describes the NO molecule?

Accepted Answer

The answer of Which of the following electron distributions among...

Question 11

Paramagnetism is associated with paired electrons.

Accepted Answer

A) True 
 B)False

Question 12

Order the following from shortest to longest bond: C2,B2,H2,N2

Accepted Answer

A) H2,N2,C2,B2 
B) N2,C2,B2,H2 
C) C2,N2,H2,B2 
D) C2,B2,H2,N2 
E) none of these 
A) H2,N2,C2,B2 
B) N2,C2,B2,H2 
C) C2,N2,H2,B2 
D) C2,B2,H2,N2 
E) none of these

Question 13

The hybridization of the central atom in O3 is:

Accepted Answer

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

Question 14

Which of the following molecules contains a central atom with sp2 hybridization?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 15

Consider the molecule C2H4.The hybridization of each C atom is

Accepted Answer

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

Question 16

Which of the following diatomic molecules has a bond order of 2?

Accepted Answer

A) B2 
B) C2 
C) P2 
D) F2 
E) Li2 
A) B2 
B) C2 
C) P2 
D) F2 
E) Li2

Question 17

The fact that O2 is paramagnetic can be explained by

Accepted Answer

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

Question 18

What hybridization is predicted for the nitrogen atom in the NO3- ion?

Accepted Answer

A) sp2 
B) sp3 
C) dsp3 
D) d2sp3 
E) none of these 
A) sp2 
B) sp3 
C) dsp3 
D) d2sp3 
E) none of these

Question 19

Use the molecules below to answer the next three questions.  
-Which molecule(s)have p orbitals that share an electron pair to create $\pi$ bonding?

Accepted Answer

A) I 
B) II 
C) III 
D) all of the above 
E) none of the above 
A) I 
B) II 
C) III 
D) all of the above 
E) none of the above

Question 20

The bond order in the NO molecule is

Accepted Answer

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

Exam 9: Covalent Bonding: Orbitals

The hybridization of the lead atom in PbCl4 is

The bond order for CN- is 2.

What is the bond order of C2+?

The configuration ( σ\sigmaσ 2s)2( σ\sigmaσ 2s*)2( π\piπ 2py)1( π\piπ 2px)1 is the molecular orbital description for the ground state of

Which of the following does not contain at least one pi bond?

The C-C-H bond angles in ethylene,C2H4,are 120°.What is the hybridization of the carbon orbitals?

Which statement about N2 is false?

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

The mixing of native atomic orbitals to form special orbitals for bonding is called __________.

Which of the following electron distributions among the molecular orbitals best describes the NO molecule?

Paramagnetism is associated with paired electrons.

Order the following from shortest to longest bond: C2,B2,H2,N2

The hybridization of the central atom in O3 is:

Which of the following molecules contains a central atom with sp2 hybridization?

Consider the molecule C2H4.The hybridization of each C atom is

Which of the following diatomic molecules has a bond order of 2?

The fact that O2 is paramagnetic can be explained by

What hybridization is predicted for the nitrogen atom in the NO3- ion?

Use the molecules below to answer the next three questions. -Which molecule(s)have p orbitals that share an electron pair to create π\piπ bonding?

The bond order in the NO molecule is

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Filters

The hybridization of the lead atom in PbCl₄ is

The bond order for CN^- is 2.

What is the bond order of C₂⁺?

The configuration ( $\sigma$ _2s)²( $\sigma$ _2s*)²( $\pi$ _2py)¹( $\pi$ _2px)¹ is the molecular orbital description for the ground state of

The C-C-H bond angles in ethylene,C₂H₄,are 120°.What is the hybridization of the carbon orbitals?

Which statement about N₂ is false?

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

Order the following from shortest to longest bond: C₂,B₂,H₂,N₂

The hybridization of the central atom in O₃ is:

Which of the following molecules contains a central atom with sp² hybridization?

Consider the molecule C₂H₄.The hybridization of each C atom is

The fact that O₂ is paramagnetic can be explained by

What hybridization is predicted for the nitrogen atom in the NO₃^- ion?

Use the molecules below to answer the next three questions. $Use the molecules below to answer the next three questions. -Which molecule(s)have p orbitals that share an electron pair to create \pi bonding?$ -Which molecule(s)have p orbitals that share an electron pair to create $\pi$ bonding?