Chp10,Mol Geom and Hybridiz
8
Chang, 8 th Edition, Chapter 10, Worksheet #1 S.B. Piepho, Fall 2005 Predicting Molecular Geometry and Hybridization 1. In each case, predict (a) the approximate bond angle(s) , (b) the hybridization around the underlined atom. (Note: It is helpful to first sketch the Lewis stucture!) Molecule or Ion (1) O F 2 (2) H 2 C O (3) N O 2 + (4) B F 3 (5) SbF 5 page 1
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Transcript of Chp10,Mol Geom and Hybridiz
Chang, 8th Edition, Chapter 10, Worksheet #1 S.B. Piepho, Fall 2005
Predicting Molecular Geometry and Hybridization
1. In each case, predict (a) the approximate bond angle(s), (b) the hybridization around the underlined atom. (Note: It is helpful to first sketch the Lewis stucture!)
Molecule or Ion (1) OF2 (2) H2CO (3) NO2+ (4) BF3 (5) SbF5
page 1
Chang, 8th Edition, Chapter 10, Worksheet #1 S.B. Piepho, Fall 2005
→page 2
Chang, 8th Edition, Chapter 10, Worksheet #1 S.B. Piepho, Fall 2005
(a) No. of valence e - ‘s
(b) Lewis structure
(c) Approximate bond angle(s)(d) Hybridization
(e) Polar or non-polar molecule?
Ion: Not applicable
(f) Geometry name
______________________________________________________________________________2. For each of the molecules below fill in the indicated items in the chart. The central atoms are underlined.
Molecule (1) SO2 (2) HBF2 (3) XeF4 (4) CH2Cl2 (5) NF3(a) No. of valence e - ‘s
(b) Lewis structure
(c) Approximate bond angle(s)(d) Hybridization
(e) Polar or non-polar molecule?(f) Geometry name
____________________________________________________________________________3. Predict (a) the approximate bond angle, (b) the hybridization around the indicated atoms (the atoms to which the arrows are drawn in the structures below). Write your answers near the corresponding labels (1 to 5) in the drawings. (Note: the lone pairs on the F atoms are omitted.)
N
C
N
C
C
C
N
C
N
N
O
H
H H
H
H
3
4
5F S
F F
F
1
F Br
F F
F
F 2
page 3
Chang, 8th Edition, Chapter 10, Worksheet #1 S.B. Piepho, Fall 2005
Answers:
1. In each case, predict (a) the approximate bond angle(s), (b) the hybridization around the underlined atom. (Note: It is helpful to first sketch the Lewis stucture!)
Molecule or Ion (1) OF2 (2) H2CO (3) NO2+ (4) BF3 (5) SbF5
page 4
Chang, 8th Edition, Chapter 10, Worksheet #1 S.B. Piepho, Fall 2005
→page 5
Chang, 8th Edition, Chapter 10, Worksheet #1 S.B. Piepho, Fall 2005
(a) No. of valence e - ‘s 20 12 16 24 40(b) Lewis structure
(c) Approximate bond angle(s)
109.5o 120o 180o 120o 90o, 120o
(d) Hybridization sp3 sp2 sp sp2 sp3d
(e) Polar or non-polar molecule?
polar polar Ion: Not applicable
non-polar non-polar
(f) Geometry name bent trigonal planar linear trigonal planar trigonal bypyramidal
______________________________________________________________________________2. For each of the molecules below fill in the indicated items in the chart. The central atoms are underlined.
Molecule (1) SO2 (2) HBF2 (3) XeF4 (4) CH2Cl2 (5) NF3(a) No. of valence e - ‘s 18 18 36 20 26
(b) Lewis structure
(c) Approximate bond angle(s)
120o 120o 90o 109.5o 109.5o
(d) Hybridization sp2 sp2 sp3d2 sp3 sp3
(e) Polar or non-polar molecule?
polar polar non-polar polar polar
(f) Geometry name bent trigonal planar square planar tetrahedral trigonal pyramidal
____________________________________________________________________________3. Predict (a) the approximate bond angle, (b) the hybridization around the indicated atoms (the atoms to which the arrows are drawn in the structures below). Write your answers near the corresponding labels (1 to 5) in the drawings. (Note: the lone pairs on the F atoms are omitted.)
N
C
N
C
C
C
N
C
N
N
O
H
H H
H
H
3
4
5F S
F F
F
1
F Br
F F
F
F 2
(1) 90o, 120o; sp3d (2) 90o; sp3d2 (3) 109.5o; sp3 (4) 120o; sp2 (5) 109.5o; sp3
page 6
