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Unit 7 Review Questions (Molecular Geometry/IMF's)

Total questions: 30

Worksheet time: 2hrs 7mins

Name
Class
Date
1.

Determine the molecular geometry of the given structure.

a)

Trigonal Pyramidal

b)

Trigonal Bipyramidal

c)

Trigonal Planar

d)

Tetrahedral

2.
SiCl4 has what shape?
a)
square planar
b)
square pyramidal
c)
tetrahedral
d)
octahedral
3.

What is the molecular geometry of CO2?

a)

Bent

b)

Trigonal planar

c)

Trigonal pyramidal

d)

Linear

4.
Choose the correct shape for this molecule:
a)
Trigonal planar
b)
Trigonal pyramidal
c)
Bent
d)
Tetrahedral
5.
How many electrons can be used in the Lewis Structure for : NO3 -
a)
23
b)
20
c)
18
d)
24
6.

What is the molecular geometry of the following molecule?: H2S

a)

bent

b)

tetrahedral

c)

linear

d)

trigonal pyramidal

7.
What is the VSEPR theory used to predict?
a)
Bond Strength
b)
Polarity
c)
Molecular Shape
d)
Electronegativity
8.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
9.
Which of the following is the correct Lewis structure for the compound PBr3?
a)
structure A
b)
structure B
c)
structure C
d)
structure D
10.

In the correct Lewis structure for water, how many lone pairs(unshared) of electrons will oxygen have?

a)

1

b)

4

c)

0

d)

2

11.

Which of the following has a double bond?

a)

CH4

b)

O2

c)

N2

d)

F2

12.

In the correct Lewis structure for CH4, how many lone pairs surround the carbon?

a)

2

b)

8

c)

0

d)

4

13.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
14.

What is the electron geometry of this compound?

a)

Bent

b)

Linear

c)

Trigonal Planar

d)

Tetrahedral

15.

What is the molecular geometry of this compound?

a)

Trigonal Pyramid

b)

Linear

c)

Bent

d)

Tetrahedral

16.

What type of intermolecular force(s) is present in this molecule?

a)

London Forces

b)

London Forces & Dipole-Dipole interaction

c)

London Forces, Dipole-Dipole interaction, and Hydrogen Bonding

d)

London Forces & Hydrogen Bonding

17.

What type of intermolecular force(s) is present in this molecule?

a)

London forces

b)

London forces & dipole-dipole interaction

c)

London forces, dipole-dipole interaction, and hydrogen bonding

18.

Will this molecule be polar or nonpolar? CS2

a)

polar; bent

b)

nonpolar; linear

c)

polar; linear

d)

nonpolar; bent

19.

Will this molecule be polar or nonpolar? CH2Br2

a)

polar

b)

nonpolar

20.

Which state of matter has the weakest intermolecular forces

a)

solid

b)

liquid

c)

gas

21.

Intermolecular forces are

a)

the relationship between protons and electrons of an element.

b)

the attraction between molecules.

c)

the attraction within molecules.

d)

the reacting of elements.

22.

The greatest intermolecular force is the:

a)

Dipole - Dipole

b)

Hydrogen Bonding

c)

London Dispersion Forces

23.

_________ are the attractive forces caused by the formation of temporary dipole.

a)

Dipole-Dipole

b)

Debye (Induced) Dipole

c)

London Dispersion Forces

d)

Hydrogen "Bonds"

24.

Hydrogen bonding occurs when hydrogen is bonded to N, O, or F. Which of the following has hydrogen bonding?

a)

CH4

b)

CH2F2

c)

H2S

d)

NH3

25.
In general, substances with stronger intermolecular forces have ___________  boiling points than those with weaker intermolecular forces
a)
higher
b)
lower
26.

Which of the following has the highest boiling point?

a)

H2

b)

I2

c)

N2

d)

O2

27.

Partially positive(δ+) charged atoms are

a)

MORE electronegative

b)

LESS electronegative

28.

Type of intermolecular force present in I2, Br2, and Cl2.

a)

Dipole-dipole interaction

b)

Hydrogen bonding

c)

London forces

29.

What is the greatest intermolecular force present in HCl?

a)

Dipole-dipole interaction

b)

London forces

c)

Hydrogen bonding

30.

On which end of the HF molecule would you find a partial negative charge (δ-)?

a)

H

b)

F

c)

neither