Deck 7: Chemical Bonding Ii

Question 1

Give the hybridization for the Br in BrF₅.

A) sp³d²
B) sp³d
C) sp³
D) sp²
E) sp

Answer 1

sp³d²

Question 2

Identify the number of electron groups around a molecule with sp² hybridization.

A) 1
B) 2
C) 3
D) 4
E) 5

Answer 2

3

Question 3

Give the hybridization for the S in SF₆.

A) sp
B) sp²
C) sp³
D) sp³d
E) sp³d²

Answer 3

sp³d²

Question 4

Use the molecular orbital diagram shown to determine which of the following are paramagnetic.

A) B₂²⁺
B) B₂²⁻
C) N₂²⁺
D) C₂²⁻
E) B₂

Question 5

Give the hybridization for the O in H₃O⁺.

A) sp
B) sp³
C) sp²
D) sp³d
E) sp³d²

Question 6

Identify the number of electron groups around a molecule with sp hybridization.

A) 1
B) 2
C) 3
D) 4
E) 5

Question 7

Give the hybridization for the C in HCN.

A) sp³d²
B) sp³d
C) sp³
D) sp²
E) sp

Question 8

Give the hybridization for the C in C₂F₂.

A) sp³d²
B) sp³d
C) sp³
D) sp²
E) sp

Question 9

Give the hybridization for the S in SO₃.

A) sp
B) sp³
C) sp²
D) sp³d
E) sp³d²

Question 10

Give the electron geometry (eg),molecular geometry (mg),and hybridization for H₂O.

A) eg = tetrahedral, mg = bent, sp³
B) eg = trigonal pyramidal, mg = trigonal pyramidal, sp³
C) eg = tetrahedral, mg = trigonal pyramidal, sp³
D) eg = bent, mg = bent, sp²
E) eg = trigonal planar, mg = trigonal planar, sp²

Question 11

Use the molecular orbital diagram shown to determine which of the following is MOST stable.

A) C₂²⁺
B) N₂²⁺
C) B₂
D) C₂²⁻
E) B₂²⁺

Question 12

How many of the following molecules have sp² hybridization on the central atom?
HCN SO₂ OCl₂ XeCl₂

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

Question 13

Give the electron geometry (eg),molecular geometry (mg),and hybridization for XeF₄.

A) eg = tetrahedral, mg = tetrahedral, sp³
B) eg = trigonal pyramidal, mg = trigonal pyramidal, sp³
C) eg = octahedral, mg = square planar, sp³d²
D) eg = octahedral, mg = octahedral, sp³d²
E) eg = trigonal bipyramidal, mg = seesaw, sp³d

Question 14

Which of the following statements is TRUE?

A) The total number of molecular orbitals formed doesn't always equal the number of atomic orbitals in the set.
B) A bond order of 0 represents a stable chemical bond.
C) When two atomic orbitals come together to form two molecular orbitals, one molecular orbital will be lower in energy than the two separate atomic orbitals and one molecular orbital will be higher in energy than the separate atomic orbitals.
D) Electrons placed in antibonding orbitals stabilize the ion/molecule.
E) All of the above are true.

Question 15

Give the hybridization for the O in OF₂.

A) sp
B) sp³
C) sp²
D) sp³d
E) sp³d²

Question 16

Give the hybridization for the Br in BrO₄⁻.

A) sp
B) sp³d²
C) sp³d
D) sp³
E) sp²

Question 17

Use the molecular orbital diagram shown to determine which of the following are paramagnetic.

A) O₂²⁻
B) Ne₂²⁺
C) O₂²⁺
D) F₂²⁺
E) None of the above are paramagnetic.

Question 18

Use the molecular orbital diagram shown to determine which of the following is MOST stable.

A) F₂
B) F₂²⁺
C) Ne₂²⁺
D) O₂²⁺
E) F₂²⁻

Question 19

Give the electron geometry (eg),molecular geometry (mg),and hybridization for NH₃.

A) eg = tetrahedral, mg = trigonal planar, sp²
B) eg = trigonal pyramidal, mg = trigonal pyramidal, sp³
C) eg = tetrahedral, mg = trigonal pyramidal, sp³
D) eg = trigonal pyramidal, mg = tetrahedral, sp³
E) eg = trigonal planar, mg = trigonal planar, sp²

Question 20

Give the hybridization for the Br in BrCl₃.

A) sp³d²
B) sp³d
C) sp³
D) sp²
E) sp

Question 21

The hybrid orbital set used by the central atom in BrF₃ is

A) sp
B)
C)
D) d
E)

Question 22

Identify the number of electron groups around a molecule with sp³d² hybridization.

A) 12
B) 2
C) 3
D) 4
E) 6

Question 23

Draw the molecular orbital diagram and determine the bond order for NO⁺.

A) 0.5
B) 1
C) 2
D) 2.5
E) 3

Question 24

A molecule containing a central atom with sp³d² hybridization has a(n)________ electron geometry.

A) octahedral
B) trigonal pyramidal
C) tetrahedral
D) bent
E) trigonal planar

Question 25

Draw the molecular orbital diagram shown to determine which of the following is paramagnetic.

A) O₂²⁻
B) Ne₂²⁺
C) O₂²⁺
D) F₂²⁺
E) None of the above are paramagnetic.

Question 26

The hybrid orbital set used by the central atom in NH₂Cl is

A) sp
B)
C)
D) d
E)

Question 27

The hybrid orbital set used by the central atom in O₃ is

A) sp
B)
C)
D) d
E)

Question 28

A molecule containing a central atom with sp² hybridization has a(n)________ electron geometry.

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

Question 29

A molecule containing a central atom with sp³d hybridization has a(n)________ electron geometry.

A) seesaw
B) bent
C) octahedral
D) trigonal planar
E) trigonal bipyramidal

Question 30

A molecule containing a central atom with sp hybridization has a(n)________ electron geometry.

A) linear
B) trigonal pyramidal
C) square planar
D) octahedral
E) bent

Question 31

Draw the molecular orbital diagram shown to determine which of the following is paramagnetic.

A) B₂²⁺
B) B₂²⁻
C) N₂²⁺
D) C₂²⁻
E) B₂

Question 32

A molecule containing a central atom with sp³ hybridization has a(n)________ electron geometry.

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

Question 33

Use the molecular orbital diagram shown to determine which of the following is LEAST stable.

A) C₂²⁺
B) O₂²⁺
C) B₂
D) C₂²⁻
E) B₂⁺

Question 34

Give the electron geometry (eg),molecular geometry (mg),and hybridization for POCl₃.

A) eg = tetrahedral, mg = tetrahedral, sp³
B) eg = trigonal pyramidal, mg = trigonal pyramidal, sp³
C) eg = octahedral, mg = square planar, sp³d²
D) eg = octahedral, mg = octahedral, sp³d²
E) eg = trigonal bipyramidal, mg = seesaw, sp³d

Question 35

Describe a sigma bond.

A) side by side overlap of d orbitals
B) end to end overlap of p orbitals
C) s orbital overlapping with the side of a p orbital
D) overlap of two d orbitals
E) p orbital overlapping with an f orbital

Question 36

Give the electron geometry (eg),molecular geometry (mg),and hybridization for IF₄⁺.

A) eg = tetrahedral, mg = tetrahedral, sp³
B) eg = trigonal pyramidal, mg = trigonal pyramidal, sp³
C) eg = octahedral, mg = square planar, sp³d²
D) eg = octahedral, mg = octahedral, sp³d²
E) eg = trigonal bipyramidal, mg = seesaw, sp³d

Question 37

Describe a pi bond.

A) side by side overlap of p orbitals
B) end to end overlap of p orbitals
C) s orbital overlapping with the end of a d orbital
D) overlap of two d orbitals
E) p orbital overlapping with an f orbital

Question 38

Draw the molecular orbital diagram shown to determine which of the following is MOST stable.

A) F₂
B) F₂²⁺
C) Ne₂²⁺
D) O₂²⁺
E) F₂²⁻

Question 39

Draw the molecular orbital diagram shown to determine which of the following is MOST stable.

A) C₂²⁺
B) N₂²⁺
C) B₂
D) C₂²⁻
E) B₂²⁺

Question 40

The orbital hybridization on the carbon atoms in C O₂ is

A) sp.
B) sp².
C) sp³.
D) sp³d².

Question 41

Consider the molecule below.Determine the hybridization at each of the 3 labeled atoms.

A) 1 = sp², 2 = sp³, 3 = sp²
B) 1 = sp², 2 = sp³, 3 = sp³
C) 1 = sp³, 2 = sp³, 3 = sp³
D) 1 = sp³, 2 = sp³, 3 = sp²
E) 1 = sp , 2 = sp , 3 = sp²

Question 42

Give the electron geometry,molecular geometry,and hybridization for CH₃^-.

A) eg = tetrahedral; mg = trigonal pyramidal; sp³
B) eg = tetrahedral; mg = bent; sp³
C) eg = trigonal pyramidal; mg = bent; sp³
D) eg = trigonal planar; mg = trigonal planar; sp²

Question 43

How many of the following molecules have sp³d² hybridization on the central atom?
Se Cl₆ Xe Cl₄ IF₅ As Cl₅

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

Question 44

How many of the following molecules contain at least one pi bond?
C₂H₆ Br₂SO C₂Br₄ HCN

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

Question 45

Consider the molecule below.Determine the hybridization at each of the 2 labeled carbons.

A) C1 = sp³, C2 = sp²
B) C1 = sp², C2 = sp²
C) C1 = sp², C2 = sp³d
D) C1 = sp³d , C2 = sp³d
E) C1 = sp², C2 = sp³

Question 46

How many of the following molecules have sp hybridization on the central atom?
C₂Br₂ C S₂ O₃ H₂O

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

Question 47

How many of the following molecules have sp₂ hybridization on the central atom?
COH₂ Si F₄ B F₃ C₂Cl₂

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

Question 48

Draw the Lewis structure for the molecule CH₃CH₂CCH.How many sigma and pi bonds does it contain?

A) 11 sigma, 0 pi
B) 9 sigma, 1 pi
C) 8 sigma, 3 pi
D) 9 sigma, 2 pi
E) 8 sigma, 1 pi

Question 49

Draw the Lewis structure for the molecule NH₂CH₂CONHCH₂COOH.How many sigma and pi bonds does it contain?

A) 7 sigma, 0 pi
B) 14 sigma, 2 pi
C) 6 sigma, 2 pi
D) 14 sigma, 3 pi
E) 8 sigma, 1 pi

Question 50

How many of the following molecules have sp³ hybridization on the central atom?
XeCl₄ C Br₄ S F₄ C₂H₂

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

Question 51

Give the electron geometry,molecular geometry,and hybridization for both carbons in CH₃COOH.

Question 52

How many of the following molecules have sp³d hybridization on the central atom?
Si Cl₄ BrF₅ As F₅ BrF₃

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

Question 53

Consider the following compound.How many sigma and pi bonds does it contain?
CH₃CHCHCO₂H

A) 9 sigma, 4 pi
B) 11 sigma, 2 pi
C) 9 sigma, 2 pi
D) 13 sigma, 2 pi
E) 6 sigma, 2 pi

Question 54

Determine the hybridization about each interior atom in the following structure.Sketch the three-dimensional structure and label the interior atoms with their corresponding hybridization.
CH₂CHCCCH₃

Question 55

Draw the Lewis structure for the molecule C₃H₄.How many sigma and pi bonds does it contain?

A) 7 sigma, 1 pi
B) 8 sigma, 1 pi
C) 6 sigma, 2 pi
D) 10 sigma, 2 pi
E) 8 sigma, 2 pi

Question 56

List the number of sigma bonds and pi bonds in a double bond.

A) 1 sigma, 1 pi
B) 2 sigma, 0 pi
C) 2 sigma, 2 pi
D) 1 sigma, 2 pi

Question 57

Consider the following compound.How many sigma and pi bonds does it contain?
NCCH₂COOH

A) 9 sigma, 4 pi
B) 11 sigma, 2 pi
C) 9 sigma, 2 pi
D) 6 sigma, 2 pi
E) 8 sigma, 3 pi

Question 58

Draw the Lewis structure for the molecule CH₂CHCH₃.How many sigma and pi bonds does it contain?

A) 8 sigma, 1 pi
B) 9 sigma, 0 pi
C) 9 sigma, 1 pi
D) 7 sigma, 2 pi
E) 8 sigma, 2 pi

Question 59

List the number of sigma bonds and pi bonds in a triple bond.

A) 1 sigma, 1 pi
B) 2 sigma, 1 pi
C) 2 sigma, 2 pi
D) 1 sigma, 2 pi

Question 60

List the number of sigma bonds and pi bonds in a single bond.

A) 1 sigma, 0 pi
B) 0 sigma, 1 pi
C) 1 sigma, 1 pi
D) 3 sigma, 2 pi

Question 62

Use molecular orbital theory to determine whether He₂²⁺ or He₂⁺ is more stable.Draw the molecular orbital diagram for each and explain your answer.

Question 63

According to molecular orbital theory,what is an antibonding orbital?