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Electron Configuration

Total questions: 28

Worksheet time: 42mins

Name
Class
Date
1.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
2.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
3.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
4.
Which electron configuration belongs to Chlorine (Cl)?
a)
1s2 2s2 2p6 3s2 3p5
b)
1s2 2s2 2p6 3s2 3p6
c)
1s2 2s2 2p6 3s2 3p7
5.
How many electrons can the d sublevel hold?
a)
14
b)
10
c)
2
d)
6
6.
How many electrons can the s sublevel hold?
a)
14
b)
10
c)
2
d)
6
7.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
8.

Each row on the periodic table represents:

a)

an energy level

b)

a sublevel

c)

an electron

d)

an orbital

9.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
10.
Which electron configuration belongs to Copper (Cu)?
a)
1s2 2s2 2p6 3s2 3p6 4s2 3d8
b)
1s2 2s2 2p6 3s2 3p6 4s2 3d9
c)

1s2 2s2 2p6 3s2 3p6 4s1 3d10

11.
Identify the Electron Configuration for Aluminum (Al)
a)
1s2 2s2 2p6 3s2 3p1
b)
1s2 2s2 2p6 3s2 3p3
c)
1s2 2s2 2p6 3s2 4p1
12.
How many electrons can the d sublevel hold?
a)
8
b)
10
c)
2
d)
4
13.
What is this element? 
1s22s22p63s23p6
4s23d104p6
a)
Argon
b)
Krypton
c)
Selenium
d)
Bromide
14.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
15.
How many valence electrons does phosphorus have?
a)
5
b)
2
c)
8
d)
15
16.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
17.

What noble gas should be used to write the shorthand configuration for Ti?

a)

Ar

b)

Kr

c)

Xe

d)

Sb

18.
Electron arrangement that uses arrows
a)
Electron configuration
b)
Shorthand configuration
c)
Lewis dot structure
d)
Orbital diagram
19.
What is the noble gas configuration for beryllium?
a)
[He]1s2
b)
[He]2s2
c)
[Li]2s1
d)
[Li]2s2
20.

Choose the Noble Gas that you would use to begin the shorthand configuration of the following element.

Iron

a)

[He]

b)

[Ne]

c)

[Ar]

d)

[Kr]

21.

What is the correct condensed electron configuration for potassium (K)?

a)

[Ar] 4s1

b)

[Kr] 4s1

c)

[Ar] 4s2

d)

[Kr] 4s2

22.

What is the noble gas configuration for silicon?

a)

[Ne] 3s2 3p1

b)

[Ar] 4s1

c)

[Kr] 5s1

d)

[Ne] 3s2 3p2

23.

Why do electrons enter the 4s orbital before entering the 3d orbital? 

a)

because the 3d orbital is at a lower energy level

b)

because both the 4s and 3d orbitals are at the same energy level

c)

because the 4s orbital is at a lower energy level

d)

because the 4s orbital is at a higher energy level

24.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
25.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
26.
What is incorrect about this orbital diagram?
a)
Both arrows in the 2p box should be pointing up
b)
There is nothing incorrect with this diagram
c)
In the there should only be 1 orbital in the first 2p box and one in the 2nd 2p box
d)
All the arrows should be pointing up.
27.
Which is associated with more energy? 
a)
2p
b)
2s
c)
3p
d)
1s
28.
Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle

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