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HOW ELECTRONS ARE DISTRIBUTED IN SHELLS

Total questions: 15

Worksheet time: 10mins

Name
Class
Date
1.

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

a)

1

b)

2

c)

4

d)

8

2.

How many electrons does the first shell hold?

a)

1

b)

2

c)

4

d)

8

3.
What is the electron configuration of sodium?
a)
2.8
b)
2.8.2
c)
2.8.1
d)
11
4.
Which element has an electron configuration of 2.5?
a)
Oxygen
b)
Nitrogen
c)
Phosphorus
d)
Carbon
5.
Which element has an electron configuration of 2.8.8?
a)
Lead
b)
Flourine
c)
Neon
d)
Argon
6.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
7.

Where is Calcium located on the periodic table?

a)

Group 4A, period 2

b)

Group 2A, period 4

c)

Group 7A, period 2

d)

Group 2A, period 7

8.

Valence Electrons are the electrons located where?

a)

The outer shell of an atom

b)

The inner shell of an atom

c)

The nucleus of an atom

d)

In all of the shells of an atom

9.

How many valence electrons are in the atom shown in the picture?

a)

2

b)

3

c)

5

10.

Based on the number of shells and valence electrons, which element is pictured?

a)

Nitrogen

b)

Indium

c)

Arsenic

d)

Phosphorous

11.

Which element is shown in the picture based on the number of valence electrons and electron shells? (this one is a bit more tricky because it is an exception to the rule)

a)

Hydrogen

b)

Helium

c)

Magnesium

d)

Beryllium

12.

How many valence electrons are in the atom shown in the picture?

a)

2

b)

8

c)

6

13.

How many valence electrons are in an atom of Silicon (Si)?

a)

4

b)

3

c)

14

d)

8

14.

How many valence electrons are in an atom of Potassium (K)?

a)

5

b)

19

c)

1

d)

8

15.

2NaCl (common table salt) contains how many total atoms?

a)

2

b)

3

c)

4

d)

8