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Lone Pairs in VSEPR Theory
Related Topics
Wize University Chemistry Textbook > VSEPR Shapes and Polarity
VSEPR (Molecular Shapes)
6 Activities
For each of the following molecules, determine the
VSEPR shape
and the
molecular shape
.
a)
COS (C is the central atom)
b)
POCl
3
c)
ICl
3
d)
SeO
3
e)
SH
5
-
Part a) COS - VSEPR Shape
Part a) COS - molecular shape
Part b) POCl3 - VSEPR shape
Part b) POCl3 - molecular shape
Part c) ICl3 - VSEPR shape
Part c) ICl3 - molecular shape
Part d) SeO3 - VSEPR shape
Part d) SeO3 - molecular shape
Part e) SH5- - VSEPR shape
Part e) SH5- - molecular shape
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More VSEPR (Molecular Shapes) Questions:
MDMA (3,4-methylenedioxy-methamphetamine) or “Molly” is a psychoactive drug commonly used for recreational purposes, which has been investigated as a treatment for PTSD. It functions by triggering serotonin release and inhibiting serotonin reuptake in the human brain, causing euphoric and empathogenic effects on the user. The structure of MDMA is shown below.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Simple VSEPR Shapes
Draw the Lewis Structure, Perspective Diagram, and identify the molecular shape of the following molecules.
a)
SiH
4
b)
AsBr
5
Lone Pairs in VSEPR Theory
Determine the VSEPR shape of the: Ni, O and C atoms for complete Lewis structure of the molecule below.
Lone Pairs in VSEPR Theory
Determine the VSEPR and molecular shapes of the: Ni, O and C atoms for complete Lewis structure of the molecule below.
VSEPR
Using VSEPR theory predict the molecular shape of the cation in tetramethylammonium iodide, [(CH
3
)
4
N]
+
I
-
.
VSEPR
The Lewis structure of a simple organic fragment is shown below:
What is the NCO bond angle?
VSEPR
The Lewis structure of a simple organic fragment is shown below:
What is the HCH angle of the CH
3
group?
Hybridization, bond angle
1. What are the hybridization of each of the N atom in N
3
―
and what is the NNN bond angle?
2. What are the hybridization of each of the atoms in HOCN? What are the HOC and OCN bond angles?
Choose the correct option:
Hybridization, VSEPR
For the natural product Ottelione A, denote the hybridization, approximate bond angle and VSEPR notation for the highlighted atoms.
Which of the following compounds would have a seesaw molecular geometry (shape).
A. IBr
4
–
B. TeH
4
MDMA (3,4-methylenedioxy-methamphetamine) or “Molly” is a psychoactive drug commonly used for recreational purposes, which has been investigated as a treatment for PTSD. It functions by triggering serotonin release and inhibiting serotonin reuptake in the
human brain, causing euphoric and empathogenic effects on the user. The structure of MDMA is shown below.
Which of the following statements are true?
VSEPR
Consider the VSEPR for the “best” Lewis diagrams for the following species and use them to answer the next three questions
1. PH
3
2. AlH
4
-
Lewis Structure: Geometry Practice
Three compounds are given below. Write the dot structure and draw the molecular geometry for each of these molecules. Also include a descriptive name to describe the molecular shape: bent, T-shaped, see-saw, trigonal planar, trigonal pyramid, trigonal bipyramid, square planar, square pyramid, tetrahedral, or octahedral.
Consider the following reaction of silicon tetrafluoride:
S
i
F
4
+
F
−
→
S
i
F
5
−
\rm SiF_4 + F^- \to {SiF_5}^-
Si
F
4
+
F
−
→
Si
F
5
−
Give the AX
n
E
m
notation and name of the molecular geometry around
S
i
\rm Si
Si
before and after this reaction. Are either of these species polar?
Hybridization, VSEPR
Consider XeO
3
and answer the following:
a. What is the approximate O-Xe-O bond angle?
b. What is the hybridization of Xe?
Practice: VSEPR
Draw the shapes of the following molecules/ions using VSEPR theory and comment on their polarities:
1. SO
2
2. H
2
O
VSEPR: Molecular Polarity
Answer the following questions for the molecule: XeO
2
F
2
.
VSEPR: Bond Angles
The structures of TeF
5
-
and SF
6
have identical VSEPR shapes, yet TeF
5
-
has bond angles of 79
o
and SF
6
has bond angles of 90
o
. Explain the difference.
VSEPR
Determine the VSEPR shape and molecular shape of XeCl
2
F
2
.
VSEPR
Determine the VSEPR shape for the following molecules.
a)
AlH
3
b)
SeCl
6
Lone Pairs in VSEPR Theory
Determine the VSEPR and molecular shapes of the: Ni, O and C atoms for complete Lewis structure of the molecule below.
Lone Pairs in VSEPR Theory
Match each of the following molecules to the correct molecular shape (remember, N (# e
-
pairs) = #lone pairs + #bonds). BUT, for molecular shape, lone pairs are NOT included.
Lone Pairs in VSEPR Theory
Match each of the following molecules to the correct VSEPR shape (remember, N (# e
-
pairs) = #lone pairs + #bonds).
Simple VSEPR Shapes
Determine the VSEPR shape of the following molecules.
a)
SiH
4
b)
AsBr
5
Organic Compounds
Answer the following questions on the organic structure below.
Lone Pairs in VSEPR Theory
For each of the following molecules, determine the
VSEPR shape
and the
molecular shape
.
a)
BrCl
5
b)
H
2
S
VSEPR
Using VSEPR theory predict the molecular shape of the cation in tetramethylammonium iodide, [(CH
3
)
4
N]
+
I
-
.
VSEPR
Question refers to the figure below. All of these structures have five (5) electron domains.
Which element M will lead to an MF
3
molecule with shape D above?
VSEPR: Molecular Geometry
Name the molecular geometry of the following compounds
a)
N
O
3
−
\rm {NO_3}^-
N
O
3
−
b)
C
H
4
\rm CH_4
C
H
4
VSEPR
Next question concerns the molecule acrylonitrile, C
3
H
3
N, shown below.
The H-C-H an C-C-C bond angles in a molecule of acrylonitrile are closest to what pair of values
respectively?
Lewis Structures: VSEPR
Predict the shape of BeCl
2
VSEPR
MDMA (3,4-methylenedioxy-methamphetamine) or “Molly” is a psychoactive drug commonly used for recreational purposes, which has been investigated as a treatment for PTSD. It functions by triggering serotonin release and inhibiting serotonin reuptake in the
human brain, causing euphoric and empathogenic effects on the user. The structure of MDMA is shown below.
How many atoms have trigonal planar electron geometry in MDMA?
VSEPR: Molecular Polarity
Is SO
2
polar or non-polar?
What is the molecular shape?
What is the electron geometry?
Lewis Structures: VSEPR
Which of the following compounds of xenon has exactly one nonbonding pair of electrons on the xenon
atom?
VSEPR
Next question refers to the figures below. All of these structures have five (5) electron domains.
Which of these molecular shapes best represents the shape of the molecule SeF
4
?
VSEPR
Which of these AB4 molecular geometries is observed for XeF
4
?
VSEPR
The Lewis structure of a simple organic fragment is shown below:
What is the HCH angle of the CH
3
group?
VSEPR
The Lewis structure of a simple organic fragment is shown below:
What is the NCO bond angle?
VSEPR
MDMA (3,4-methylenedioxy-methamphetamine) or “Molly” is a psychoactive drug commonly used for recreational purposes, which has been investigated as a treatment for PTSD. It functions by triggering serotonin release and inhibiting serotonin reuptake in the
human brain, causing euphoric and empathogenic effects on the user. The structure of MDMA is shown below.
What is the molecular shape of the nitrogen atom in MDMA?
Which of the following compounds would have a seesaw molecular geometry (shape).
A. IBr
4
–
B. TeH
4
VSEPR: Molecular Polarity
What is the VSEPR shape for ClF
3
? Is this a polar molecule?
VSEPR
Determine the VSEPR shape for NH
3
.
VSEPR
Determine the VSEPR structure for SF
4
.
VSEPR
What VSEPR shape does XeF
2
take?
VSEPR
What VSEPR shape does ICl
3
take?
VSEPR
What is the VSEPR structure for NH
3
.
VSEPR: Expanded valence
Give the VSEPR geometry of PF
5
.
VSEPR
Which of the following molecules has a trigonal bipyramidal electron geometry?
VSEPR: Bond Angle
Estimate which bond angle is smallest based on the VSEPR model.
VSEPR: Molecular Polarity
For the molecule, [Tel
4
]
2-
, answer the following questions
VSEPR
Draw the VSEPR diagram for each molecule. Identify the hybridization of the central atom.
P
C
l
5
C
O
2
B
F
3
S
F
4
PCl_5\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ CO_2\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ BF_3\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ SF_4
P
C
l
5
C
O
2
B
F
3
S
F
4
VSEPR
1) Provide a prospective drawing for the following compounds and give the parent shape and molecular shape
a) IF
7
b) SF
4
VSEPR
A molecule with the general shape of
A
X
3
E
2
\rm AX_3E_2
A
X
3
E
2
has what molecular geometry?
VSEPR
The electronic geometry of
P
O
4
3
−
\rm {PO_4}^{3-}
P
O
4
3
−
according to VSEPR theory is:
VSEPR: Polarity
Is H
2
O a polar molecule? Use a VSEPR structure to determine your answer and choose the option with the correct molecular shape.
VSEPR
What is the molecular geometry of NH
3
?
VSEPR: Molecular polarity
Name the molecular geometry of the following compounds and determine whether each is polar.
a)
N
O
3
−
NO_3^-
N
O
3
−
b)
C
H
4
CH_4
C
H
4
VSEPR
Which of the following molecules has a trigonal bipyramidal electron geometry?
VSEPR: Polarity
For the compounds below list the molecular shape and whether it is polar or non-polar.
VSEPR: Bond Angle Identification
Which of the following compounds has a 120
o
bond angle?
VSEPR: Practice
A compound has two lone pairs and is bound to four other atoms. What is the molecular shape of this compound?
VSEPR and Lewis Structure
SF
2
Cl
4
exists as two isomers. One is polar, one is non-polar. Draw a 3-D representation of both isomers below.
VSEPR
Which element M, in the compound MF
5
will lead to a trigonal bipyramidal molecular shape?
VSEPR
What is the approximate F-S-F angle in SF
6
?
VSEPR
Which of the following molecules has a square based pyramidal molecular shape?
VSEPR
The angles labelled a, b and c are approximately _ _ and _ respectively.
Which of the following compounds would have a seesaw molecular geometry (shape).
Lewis Structure: Practice
1) Draw Lewis structures for the following molecules
2) List the molecular shape and electron geometry for each
a) NH
3
.
Draw Lewis structures and give the other information requested for the following:
NO
3
-
. Polar or nonpolar molecule?
BrF
5
. Polar or nonpolar molecule? Geometry?
VSEPR: Molecular polarity
Consider the following reaction of silicon tetrafluoride:
S
i
F
4
+
F
−
→
S
i
F
5
−
\rm SiF_4 + F^- \to {SiF_5}^-
Si
F
4
+
F
−
→
Si
F
5
−
Give the AX
n
E
m
notation and name of the molecular geometry around
S
i
\rm Si
Si
before and after this reaction. Are either of these species polar?
General Bonding Concepts
Provide a prospective drawing for the following compounds and give the parent shape (or electron geometry) and molecular shape
a) IF
7
b) SF
4
How many carbon atoms with a bent shape are there in the
molecule of 3-methyl-3-penten-1-ol given its line drawing ?
VSEPR
What is the molecular geometry of
SF
4
\text{SF}_4
SF
4
?
Lewis Structures: VSEPR
If a molecule has the formula
XBr
4
−
\text{XBr}_ 4^-
XBr
4
−
with a see-saw molecular geometry, what is the best choice for the identity of
X
X
X
?
Name the molecular geometry of the following compounds
a)
N
O
3
−
\rm {NO_3}^-
N
O
3
−
b)
C
H
4
\rm CH_4
C
H
4
MDMA (3,4-methylenedioxy-methamphetamine) or “Molly” is a psychoactive drug commonly used for recreational purposes, which has been investigated as a treatment for PTSD. It functions by triggering serotonin release and inhibiting serotonin reuptake in the
human brain, causing euphoric and empathogenic effects on the user. The structure of MDMA is shown below.
VSEPR
Consider the VSEPR for the “best” Lewis diagrams for the following species and use them to
answer the following question: O
3
, NCl
3
, N
3
–
Which of the following will have bond angles of 180 °?
VSEPR
Consider the VSEPR for the “best” Lewis diagrams for the following species and use them to
answer the following question: O
3
, NCl
3
, N
3
–
Which of the following has a tetrahedral molecular shape?
VSEPR
Consider the VSEPR for the “best” Lewis diagrams for the following species and use them to
answer the following questions: O
3
, NCl
3
, N
3
-
Which of the following has trigonal planar VSEPR geometry?
VSEPR
Consider the VSEPR for the “best” Lewis diagrams for the following species and use them to answer the following question
Which of the following molecules is/are polar?
i) CF
4
VSEPR
Consider the VSEPR for the “best” Lewis diagrams for the following species and use them to answer the following questions: CF
4
, SeF
4
, KrF
4
Which of the following has a square planar molecular shape?
VSEPR
Consider the VSEPR for the “best” Lewis diagrams for the following species and use them to answer the following questions: CF
4
, SeF
4
, KrF
4
Which of the following has a tetrahedral electron-pair (VSEPR) geometry?
VSEPR
Use the molecular structure of CH
3
NCH
2
to asnwer the following question
This structure does not show lone pairs, however all bonds and non-zero formal charges are shown.
Which of the choices below correctly identifies the
electron-pair geometries
of the atoms indicated?
VSEPR
Consider the VSEPR for the “best” Lewis diagrams for the following species and use them to answer the next three questions
a) PH
3
b) AℓH
4
-
VSEPR: σ and π Frameworks with Triple Bonds
Solve the following two part question, regarding the line drawing shown below.
Part 1:
Part 2:
Molecular Polarity: Permanent dipole
The Lewis structure of formyl bromide is given below. Which of the vectors corresponds to direction of its NET molecular dipole?
Molecular Polarity and VSEPR
Molecular Polarity and VSEPR
Consider the best Lewis diagrams for the following chemical species to answer the next two questions
1. ClF
3
Consider the polyatomic ion SO
3
2-
and answer questions.
The O-S-O bond angles in this ion are (approximately)?
Consider the polyatomic ion SO
3
2-
and answer questions.
The molecular geometry is ______.
VSEPR: Hybridization & Geometry
Fill in the table for the following compounds:
SF
6
NH
3
What is the molecular shape predicted by VSEPR for ICl
3
?
Molecular Geometry V
What is the molecular shape of CO
3
2-
?
Which is the correct geometry of the following compounds: PBr
3
, BH
4
-
, NMe
4
+