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Electron Configuration

Total questions: 46

Worksheet time: 42mins

Name
Class
Date
1.
What is the electron configuration of calcium?
a)
2.8.8.2
b)
2.8.10
c)
20
d)
2.18.2
2.
What is the electron configuration of sodium?
a)
2.8
b)
2.8.2
c)
2.8.1
d)
11
3.
Which element has an electron configuration of 2.5?
a)
Oxygen
b)
Nitrogen
c)
Phosphorus
d)
Carbon
4.
Which element has an electron configuration of 2.8.8?
a)
Lead
b)
Flourine
c)
Neon
d)
Argon
5.
What is the electron configuration of Aluminium?
a)
2.8.3
b)
2.11
c)
13
d)
2.8.2
6.
What is the electron configuration of chlorine?
a)
17
b)
2.7
c)
2.8.7
d)
2.8.4
7.
Which element has the electron configuration of 2.8.2?
a)
Magnesium
b)
Sodium
c)
Sulfur
d)
Arsenic
8.
Which element has the electron configuration of 2.8.4?
a)
Neon
b)
Boron
c)
Gallium
d)
Silicon
9.
What is the electron configuration of beryllium?
a)
2.2
b)
2.4
c)
4
d)
6
10.
Which element has the electron configuration of 2.7?
a)
Krypton
b)
Iodine
c)
Flourine
d)
Barium
11.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons 
12.
Which subatomic particles contribute the most to the mass of an atom?
a)
Protons, Neutrons, Electrons
b)
Protons only
c)
Protons and Electrons
d)
Protons and Neutrons
13.
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
a)
20
b)
10
c)
5
d)
25
14.
What is the atomic mass of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
15.
What is the atomic number of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
16.
Identify this atom: 
a)
Lithium
b)
Chlorine
c)
Phosphorus 
d)
Fluorine
17.
What is the rule to follow when arranging electrons for a BOHR model of an atom?
a)
2-2-8
b)
2-8-10
c)
2-4-6-8
d)
2-8-8
18.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
19.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
20.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
21.

How many electrons does this oxygen atom have?

a)

16

b)

8

c)

24

d)

6

22.

How many protons does this oxygen atom have?

a)

16

b)

8

c)

24

d)

6

23.

What is the atomic number of Oxygen?

a)

16

b)

8

c)

24

d)

6

24.

What is the atomic mass of Oxygen?

a)

16

b)

8

c)

24

d)

6

25.

How many energy levels does Oxygen have?

a)

16

b)

8

c)

2

d)

6

26.

How many electrons does the first shell hold?

a)

1

b)

2

c)

4

d)

8

27.

How many electrons can be in the 2nd energy level hold?

a)

1

b)

2

c)

4

d)

8

28.

If both protons and neutrons are found in the nucleus, why is it positive?

a)

The reason it is positive is because neutrons have a positive charge and protons have a negative charge.

b)

The reason it is positive is because neutrons have a negative charge and protons have a positive charge

c)

The reason it is positive is because neutrons have no charge and protons have a positive charge.

d)

The reason it is positive is because neutrons have no charge and protons have a negative charge

29.

What on a periodic table tells you the number of protons in an atom?

a)

Atom number

b)

Atomic number

c)

Proton number

d)

Mass number

30.

What are the elements in group 1 (the far left) of the periodic table called?

a)

Alkali metals

b)

Alkaline earth metals

c)

Halogens

d)

Noble gases

31.

What are the elements in group 2 of the periodic table called?

a)

Alkali metals

b)

Alkaline earth metals

c)

Halogens

d)

Noble gases

32.

What are the elements in groups 3-12 of the periodic table called?

a)

Transition metals

b)

Non-metals

c)

Metalloids

d)

Metals

33.

Hydrogen is a:

a)

Alkali metal

b)

Metalloid

c)

Non-metal

d)

Noble gas

34.

A tiny, negatively charged particle that moves around the nucleus of an atom in clouds/shells is called:

a)

An electron

b)

A proton

c)

A neutron

d)

A shell

35.

The number of outermost electrons an element has is equal to its:

a)

Period number

b)

Group number

c)

Valence number

d)

Atomic number

36.
True or False - Protons and Neutrons have about the same mass.
a)
True - They have about the same mass
b)
False - They do not have about the same mass
37.
Which subatomic particle has a positive (+) charge?
a)
Neutron
b)
Proton
c)
Electron
38.
Which subatomic particle has a negative (-) charge?
a)
Proton
b)
Electron
c)
Neutron
39.
How many electron shells/levels does this atom have?
a)
1
b)
2
c)
3
d)
4
40.
How many electrons does this picture show?
a)
4
b)
5
c)
6
d)
3
41.
In this picture, the Electrons are found in which color?
a)
Blue
b)
Red
c)
Green
42.
In the periodic table, 
a)
R is just above Q
b)
Q is just above R
43.
This element has the atomic number 16. Atoms of this element have 6 electrons in their outer shell. Where is this element located in the periodic table?
a)
A
b)
B
c)
C
d)
D
44.
The picture pattern indicates which of the following on the periodic table?
a)
A group
b)
A period
45.
Most of the elements on the periodic table are classified as _____.
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Periods
46.

How many electron shells are in this atom?

a)

15

b)

5

c)

3

d)

2

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