WorksheetsLewis Structure
Total questions: 20
Worksheet time: 39mins
Name
Class
Date
1.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
2.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
3.
Three pairs of electrons are shared in a
a)
Single bond
b)
Double bond
c)
Triple bond
4.
A covalent bond is
a)
a bond that shares electrons metallicaly
b)
A bond that shares electrons with non metals
c)
Metalloids bonding
d)
metals and nonmetals bonding
5.
What is the correct Lewis Dot Structure for ammonia NH3
a)
b)
c)
d)
6.
Which is the correct molecular structure for carbon dioxide?
a)
b)
c)
d)
7.
How many electrons should Oxygen have around its Lewis dot model?
a)
5
b)
6
c)
7
d)
8
8.
In the correct Lewis structure for CH4, how many unshared electron pairs surround the carbon?
a)
2
b)
8
c)
0
d)
4
9.
This is the correct dot diagram for sodium (Na)
a)
true
b)
false
10.
This is a correct dot diagram for oxygen (O)
a)
true
b)
false
11.
This is a correct dot diagram for fluorine (F)
a)
true
b)
false
12.
This is the correct dot diagram for nitrogen (N)
a)
true
b)
false
13.
This is a correct dot diagram for nitrogen (N)
a)
true
b)
false
14.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
15.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
16.
When writing Lewis Structures, only __________ electrons are used.
a)
Inner shell
b)
Core
c)
Valence
d)
Stable
17.
Each line in a Lewis Structure represents __________ electron(s).
a)
3
b)
2
c)
1
d)
4
18.
An atom or molecule with unpaired electrons is called?
a)
Free ion
b)
Free radical
c)
Free isotope
d)
Free molecule
19.
A molecule of water has what shape?
a)
Linear
b)
Tetrahedral
c)
Bent
d)
Triangular
20.
A molecule of methane has what shape?
a)
Tetrahedral
b)
Triangular
c)
Pyramidal
d)
Octahedral
100 %
