CHM 134 General Chemistry I
Chapter 10 Worksheet – Dr. Steel
Name
1. Describe the molecular shape predicted by the VSEPR theory for each of these
molecules or ions.
a. ClF21+
d. SCO
b. PF5
e. XeF4
c. ClF3
f. SiF62-
2. Indicate whether each molecule is polar or nonpolar.
b. NH3
e. SO2
a. CH4
d. BBr3
c. ClF
f. OF2
3. Identify the type of orbital hybridization predicted to be present on the underlined
element in each of these molecules.
a. SiCl4
d. HOBr
b. SF6
e. BrF5
c. CS2
f. BBr3
4. Identify the type of orbital hybridization predicted to be present on the circled
elements in each of these molecules. Also, determine the total number of sigma and
pi bonds in each structure.
O
a.
H
b.
C
H
CH3
H
C
Cl
H
C
C
CH3
C
C
C
C
C
O
H
c.
H
H
C
H
H
H
N
C
C
H
H
5. For each of these species, draw a molecular orbital diagram, give the electron
configuration, and determine the bond order predicted by MO theory.
a. C22-
b. N22-
c. O22+
d. F2
6. Draw the Lewis structure for each of these ions and determine the VSEPR geometry
and hybridization present on the bromine atom in each case.
a. BrF41+
b. BrF41-
Answers:
1. a. bent, b. trigonal bipyramidal, c. t-shaped, d. linear, e. square planar, f. octahedral
2. a. nonpolar, b. polar, c. polar, d. nonpolar, e. polar, f. polar
3. a. sp3, b. sp3d2, c. sp, d. sp3, e. sp3d, f. sp2
4. a. C (left) sp2, C (right) sp3 6 sigma, 1 pi bonds
b. C (left) sp2, O sp2, C (right) sp3 18 sigma, 4 pi bonds
c. N sp3, C sp 5 sigma, 2 pi bonds
5.
σ∗2p
σ∗2p
π*2p
π*2p
σ2p
σ2p
π2p
π2p
σ∗2p
π*2p
σ∗2p
π*2p
σ2p
π2p
σ2p
π2p
σ∗2s
σ∗2s
σ∗2s
σ∗2s
σ2s
σ2s
σ2s
σ2s
σ2s2σ*2s2π2p4σ2p2
σ2s2σ*2s2π2p4σ2p2 π∗2p2
B.O. = 3
B.O. = 2
6. a.
σ2s2σ*2s2π2p4σ2p2 π∗2p4
B.O. = 2
1+ See-saw geometry, sp3d hybridization
F
F
σ2s2σ*2s2π2p4σ2p2 π∗2p2
Br
F
F
b.
1- square planar geometry, sp3d2 hybridization
F
F
Br
F
F
B.O. = 1