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WorksheetsValence Electrons, Bohr Models, and Lewis Dot Diagrams
Total questions: 60
Worksheet time: 2hrs 54mins
Name
Class
Date
1.
a)
2
b)
3
c)
5
2.
a)
1
b)
2
c)
3
d)
4
3.
a)
1
b)
2
c)
3
d)
4
4.
a)
1
b)
2
c)
3
d)
4
5.
a)
16
b)
32
c)
6
d)
4
6.
a)
15
b)
16
c)
5
d)
6
7.
a)
38
b)
2
c)
5
d)
40
8.
a)
35
b)
4
c)
7
d)
17
9.
a)
7
b)
5
c)
2
d)
15
10.
a)
1
b)
5
c)
37
d)
48
11.
a)
4
b)
8
c)
18
d)
36
12.
Valence electrons are:
a)
Electrons farthest away from the nucleus
b)
Electrons closest to the nucleus
c)
Electrons that just come and go - they don't stay with the atom
d)
Electrons in the second shell
13.
This could be the dot diagram of
a)
Be
b)
B
c)
C
d)
Ne
14.
This could be the dot diagram of
a)
P
b)
Ar
c)
Na
d)
B
15.
Most elements will gain or lose electrons so that they end up with _______ valence electrons.
a)
2
b)
6
c)
8
d)
10
16.
The majority of an atom's mass exists where?
a)
In the nucleus
b)
In the electron cloud
c)
In the space between the nucleus and the electrons
d)
In the neutrons
17.
What element has 7 valence electrons and 2 shells?
a)
Beryllium
b)
Chlorine
c)
Magnesium
d)
Fluorine
18.
How many protons does Fluorine (F) have?
a)
2
b)
7
c)
9
d)
19
19.
How many neutrons does Fluorine (F) have?
a)
7
b)
9
c)
10
d)
19
20.
What group number has 2 valence electrons for each atom?
a)
group 1
b)
group 2
c)
group 10
d)
group 12
21.
Valence Electrons determine an element's _____________.
a)
Reactivity
b)
Location
c)
Identity
d)
Color
22.
Protons determine an element's __________.
a)
Reactivity
b)
Nucleus
c)
Identity
d)
Color
23.
What is this element?
a)
Lithium
b)
Boron
c)
Carbon
d)
Hydrogen
24.
How many valence electrons do atoms in group 16 have?
a)
4
b)
5
c)
6
d)
7
25.
What element has 3 valence electrons and is in period 4?
a)
Aluminum
b)
Gallium
c)
Silicon
d)
Germanium
26.
How many shells of electrons does Calcium (Ca) have?
a)
1
b)
2
c)
3
d)
4
27.
How many total electrons does Fluorine (F) have?
a)
2
b)
7
c)
9
d)
19
28.
Choose an element from the list that would have physical and chemical properties the most similar to Aluminum (Al).
a)
Gallium (Ga)
b)
Silicon (Si)
c)
Magnesium (Mg)
d)
Neon (Ne)
29.
How is helium different from the other noble gases?
a)
It will react with other elements.
b)
It has 10 valence electrons.
c)
It has 2 valence electrons.
d)
It is heavier than the other noble gases.
30.
Which group does this atom belong?
a)
Group 1
b)
Group 2
c)
Group 4
d)
Group 18
31.
How many valence electrons and energy levels does this atom have?
a)
6 VE and 2 EL
b)
4 VE and 1 EL
c)
4 VE and 2 EL
d)
2 VE and 1 EL
32.
Which pair of elements have similar chemical properties?
a)
H and He
b)
Na and Cs
c)
Na and Mg
d)
Mg and Al
33.
Valence electrons are the only electrons to...
a)
get destroyed
b)
bond
c)
collide
d)
run away
34.
How many electrons should Hydrogen have around its Lewis dot model?
a)
1
b)
2
c)
7
d)
8
35.
How many Valance electrons does Iodine Have?
a)
6
b)
16
c)
7
d)
17
36.
What is an ion?
a)
A Charged Atom
b)
A Large Atom
c)
A Small Atom
d)
A Cute Atom
37.
The inner energy level of any atom can hold up to _____ electrons
a)
two
b)
eight
c)
ten
38.
The 2nd energy level of any atom can hold _____ electrons.
a)
Two
b)
Eight
c)
Ten
39.
Elements in the same column of the periodic table always have the same # of _______ as one another.
a)
Protons
b)
Neutrons
c)
Electrons
d)
Valence Electrons
40.
Magnesium & Beryllium both have 2
a)
Protons
b)
Neutrons
c)
Electrons
d)
Valence Electrons
41.
Noble gases (group 18 or 8A) have _____ valence electrons shells.
a)
empty
b)
partially full
c)
full
42.
Halogens (group 17 or 7A) lack _____ valence electrons to make a full shell.
a)
one
b)
two
c)
three
43.
The yellow atoms are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
44.
Each column in the periodic table is called a
a)
period
b)
group
c)
cluster
d)
unit
45.
How is helium different from the other noble gases (group 18 or 8A)?
a)
It will react with other elements.
b)
It has 10 valence electrons.
c)
It has 2 valence electrons.
d)
It is heavier than the other noble gases.
46.
Most of the elements to the LEFT of the zig-zag line are:
a)
metals
b)
metalloids
c)
non-metals
d)
noble gases
47.
Which element is a metalloid?
a)
Aluminum
b)
Silicon
c)
Nitrogen
d)
Lead
48.
Because it is already in the most stable form with a full valence shell, which element will not form bonds?
a)
Mercury
b)
Carbon
c)
Hydrogen
d)
Krypton
49.
Which of the following must you do to draw a Lewis dot diagram?
a)
Decide if each atom shown will give up or accept neutrons.
b)
Determine if the elements involved are metals or nonmetals.
c)
Determine the number of electrons in the outermost energy level.
d)
Decide how many protons should be shown to represent a molecule.
50.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
51.
How many valence electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
52.
Where are the metalloids / semimetals located on the periodic table?
a)
Blue
b)
Red
c)
Green
53.
How many valence electrons does Chlorine have?
a)
1
b)
7
c)
17
d)
35
54.
What does the group "A" number of each element in a representative family indicate?
a)
Electron configuration
b)
Valence electrons
c)
Noble gas
d)
Total number of electrons
55.
This is the correct dot diagram for sodium (Na)
a)
true
b)
false
56.
This is a correct dot diagram for oxygen (O)
a)
true
b)
false
57.
This is a correct dot diagram for magnesium (Mg)
a)
true
b)
false
58.
The atomic number tells you what?
a)
number of electrons
b)
number of valence electrons
c)
number of neutrons
d)
both electrons and protons in an atom.
59.
How many valence electrons does Neon have?
a)
18
b)
8
c)
10
d)
2
60.
How many electrons should Carbon have around its Lewis dot model?
a)
1
b)
3
c)
4
d)
5
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