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Worksheets

Molecular Geometry and Lewis Structures

Total questions: 26

Worksheet time: 49mins

Name
Class
Date
1.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
2.

Which is the correct Lewis structure for carbon dioxide?

a)
b)
c)
d)
3.

Choose the correct shape for this molecule:

a)

Trigonal planar

b)

Trigonal pyramidal

c)

Bent

d)

Tetrahedral

4.

What geometry will this molecular structure have?: PH3

a)

bent

b)

tetrahedral

c)

trigonal planar

d)

trigonal pyramidal

5.

What is the molecular shape of H2S?

a)

linear

b)

trigonal planar

c)

bent

d)

tetrahedral

6.

Which of the following will have this geometry?

a)

H2S

b)

CCl4

c)

NH3

d)

HCl

7.

Which of these molecules will have this molecular geometry?

a)

SO4

b)

CCl4

c)

NH2

d)

PCl4

8.

Which of these molecules will have this molecular geometry?

a)

H2S

b)

CCl2

c)

NH2

d)

CO2

9.

Which of these would be the correct molecular geometry for water?

a)
b)
c)
d)
10.

What is the molecular geometry of carbon monoxide (CO)?

a)

linear

b)

bent

c)

trigonal planar

d)

tetrahedral

11.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
12.

Which Lewis Structure drawing correctly shows an O2 molecule?

a)
b)
c)
d)
13.

Is this molecule polar or non-polar?

a)

Polar

b)

Non-polar

14.

Is this molecule polar or non-polar?

a)

Polar

b)

Non-polar

15.

Which of the following molecules has a linear shape?

a)

H2OH_2O

b)

SiO2SiO_2

c)

NH3NH_3

d)

CH4CH_4

16.

Predict the molecular shape of BF3BF_3 using VSEPR theory.

a)

Linear

b)

Trigonal planar

c)

Tetrahedral

d)

Bent

17.

Consider the molecule SeF2SeF_2 . What is the molecular geometry and the reason for this shape?

a)

Linear, because it has no lone pairs on the central atom.

b)

Bent, because it has one lone pair on the central atom.

c)

Bent, because it has two lone pairs on the central atom.

d)

Trigonal planar, because it has no lone pairs on the central atom.

18.

What is the molecular geometry of SiH4SiH_4 according to VSEPR theory?

a)

Linear

b)

Trigonal planar

c)

Tetrahedral

d)

Bent

19.

How many valence electrons are present in a molecule of HClHCl ?

a)

6

b)

7

c)

8

d)

9

20.
How many valence electrons are in Phosphorus?
a)
15
b)
4
c)
5
d)
31
21.

Which of the following compounds has only single bonds?

a)

I only

b)

II only

c)

III only

d)

I and III

e)

III and IV

22.

NH3 has how many lone pairs?

a)

0

b)

1

c)

2

d)

3

23.

CCl4 has how many double bonds?

a)

0

b)

1

c)

2

d)

3

24.

In HCN (Carbon is usually the central atom) what kind of bond is between the C and N

a)

Single

b)

Double

c)

Triple

25.

Why is this Lewis Structure incorrect? Choose all that apply.

a)

There are too many bonds around Si.

b)

There should only be single bonds in this Lewis Structure.

c)

The Structure is missing a triple bond.

d)

Chlorine only has 6 electrons surrounding it.

26.

Why is this Lewis Structure incorrect? Select all that appy.

a)

There should be a single bond between H and C.

b)

There should be a triple bond between C and N.

c)

Carbon has too many bonds around it.

d)

Hydrogen needs more electrons.