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ELECTRON CONFIGURATION PRACTICE

Total questions: 67

Worksheet time: 3hrs 59mins

Name
Class
Date
1.

Which of the following will have similar properties to 1s2 2s2 2p6 3s2 3p2?

a)

carbon

b)

calcium

c)

chlorine

d)

cesium

2.

What is the electron configuration for potassium?

a)

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

b)

1s2 2s2 2p6 3s2 3p6 4s2

c)

1s2 2s1 2p6 3s2 3p5 4s1

d)

1s2 2s2 2p6 3s1

3.

What electron configuration matches an oxygen atom?

a)

1s22s22p63s2, 3p64s23d104p5

b)

1s22s22p4

c)

1s22s22p6

d)

1s22s22p63s23p64s23d1

4.

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

5.

What is the position of an element in the periodic table if its electron configuration is 1s2 2s2 2p6 3s2 3p5?

a)

Group 1

(1A)

b)

Group 2

(2A)

c)

Group 15

(5A)

d)

Group 17

(7A)

6.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
7.
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
8.
What do you start electron configuration with?
a)
1s2
b)
1d10
c)
1f14
d)
1p6
9.

What is the noble gas notation electron for Sulfur?

a)

[Ne] 3p4

b)

[He] 3s2 3p4

c)

[Ne] 3s2 3p4

d)

[Na] 3s2 3p4

10.

What is the noble gas notation for group 15 (also named Family V)?

a)

[Ar] 4s2 4d2

b)

[Kr] 4s2 3d3

c)

[Ar] 4s2 4d3

d)

[Ar] 4s2 3d3

11.

What is the noble gas configuration for silicon?

a)

[Ne] 3s2 3p1

b)

[Ar] 4s1

c)

[Kr] 5s1

d)

[Ne] 3s2 3p2

12.
Question Image

Match the parts of the electron configuration to what it represents.

a)

1

1.

period

b)

s

2.

block

c)

2

3.

element

13.

Finish the electron configuration for chlorine:

1s2 2s2 (a)   3s2 3p6

14.
Question Image

Match the group to the configuration that it ends with.

a)

s1

1.

alkali metals

b)

s2

2.

alkaline earth metals

c)

p5

3.

halogens

d)

p6

4.

noble gases

15.

What is the missing piece?

1s2 2s2 ___ 3s1

a)

2p6

b)

2p4

c)

3p6

d)

3s2

16.

What are the missing pieces?

1s2 2s2 2p6 ___ 3p6 4s2 ___ 4p2

a)

3s2 , 4d10

b)

2p4 , 3d10

c)

3p6 , 3d10

d)

3s2 , 3d10

17.
Question Image

Match the element to it's noble gas notation:

a)

krypton

1.

[Kr]

b)

silicon

2.

[Ne] 3s2 3p2

c)

strontium

3.

[Kr] 5s2

d)

copper

4.

[Ar] 4s2 3d9

18.

Reorder these from shortest electron configuration to the longest:

a)

hydrogen

b)

boron

c)

argon

d)

calcium

e)

xenon

1)
2)
3)
4)
5)
19.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
20.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
21.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
22.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
23.
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
24.

Which of the following is not a sublevel

a)

s

b)

p

c)

n

d)

f

e)

d

25.
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
26.
Electron arrangement that uses arrows
a)
Electron configuration
b)
Shorthand configuration
c)
Lewis dot structure
d)
Orbital diagram
27.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
28.

Which of the following is a p sublevel element?

a)
Ca
b)
Ar
c)
Re
d)
Au
29.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
30.
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
31.
An orbital can at most hold how many electrons?
a)
1 electron
b)
2 electrons
c)
3 electrons
d)
4 electrons
32.

The electron configuration 1s2 2s22p6 3s23p6 represents which noble gas?

a)

neon

b)

argon

c)

helium

d)

krypton

33.

What atom matches this electron configuration?

[Xe] 6s24f145d9

a)

Mercury

b)

Gold

c)

Platinum

d)

Thallium

34.
What is the noble gas configuration for beryllium?
a)
[He]1s2
b)
[He]2s2
c)
[Li]2s1
d)
[Li]2s2
35.
[Ne]3s23p1 is the noble gas configuration for which element?
a)
scandium
b)
boron
c)
nitrogen
d)
aluminum
36.
What is the noble gas configuration for Neon?
a)
[Ne]
b)
[He]2s22p6
c)
[F]2p1
d)
[Ne]2s21p6
37.

Choose the correct electron configuration for Beryllium (Be).

a)

1s1

b)

1s2 2s2

c)

1s2 2s2 2p1

38.

Choose the correct electron configuration for Chlorine (Cl).

a)

1s2 2s2 2p1

b)

1s2 2s2 2p6 3s2

c)

1s2 2s2 2p6 3s2 3p5

39.
What is the noble gas configuration for beryllium?
a)
[He]1s2
b)
[He]2s2
c)
[Li]2s1
d)
[Li]2s2
40.
What is the noble gas configuration for boron?
a)
[He]1s22s2
b)
[He]2s22p2
c)
[He]2s22p1
d)
[Li]2s22p1
41.
What is the noble gas configuration for Sulfur?
a)
[Ar] 3p4
b)
[He] 3s2 3p4
c)
[Ne] 3s2 3p4
d)
[Na] 3s2 3p4
42.

Choose the correct electron configuration for Nickel (Ni).

a)

1s2 2s2 2p6 3s2 3p6 4s2 3d8

b)

1s2 2s2 2p6 3s2 3p6 4s2 3d2

c)

1s2 2s2 2p6 3s2 3p6 4s10

43.

Choose the correct electron configuration for Krypton (Kr).

a)

1s2 2s2 2p6 3s2 3p6 4s8 3d8

b)

1s2 2s2 2p6 3s2 3p6 4s2 3d8 4p3

c)

1s2 2s2 2p6 3s2 3p6 4s2 3d8 4p6

44.

What element has the following electron configuration: 1s2 2s2 2p6 3s2?

a)

Ca+2

b)

Ca

c)

Mg

d)

Na

e)

Ar

45.
Question Image

Match the elements with their electron configuration! (3 minutes)

a)

1s2 2s2 2p3

1.

Nitrogen, N

b)

1s2 2s2 2p6 3s2 3p3

2.

Phosphorus, P

c)

1s2

3.

Helium, He

d)

1s2 2s2 2p6 3s2 3p6

4.

Argon, Ar

e)

1s2 2s2 2p6 3s2 3p6 4s2 3d5

5.

Manganese, Mn

46.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
47.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
48.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
49.
How many electrons can the d sublevel hold?
a)
8
b)
10
c)
2
d)
4
50.
How many total electrons can the f orbitals in a sublevel hold?
a)
2
b)
14
c)
6
d)
10
51.
What is this element? 
1s22s22p63s23p64s23d104p6
a)
Argon
b)
Krypton
c)
Selenium
d)
Bromide
52.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
53.
An orbital can at most hold how many electrons?
a)
1 electron
b)
2 electrons
c)
3 electrons
d)
4 electrons
54.
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
55.
Electrons are paired based on their spin directions, clockwise and counterclockwise, is what electron configuration rule?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle
56.
There are 4 different types of sublevels on the periodic table:
s,p,d,f
a)
True
b)
False
57.
Which orbital shows a violation of Hund's Rule?
a)
A
b)
B
c)
C
d)
D
58.
Which orbital shows a violation of the Pauli Exclusion Principle?
a)
A
b)
B
c)
C
d)
D
59.
Which orbital shows a violation of the Aufbau Principle?
a)
A
b)
B
c)
C
d)
D
60.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
61.
What is the electron configuration for Bromine (Br)
a)
1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d1
b)
1s2, 2s2, 2p4
c)
1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p5
d)
1s2, 2s2, 2p6
62.
What do you start electron configuration with?
a)
1s2
b)
1d10
c)
1f14
d)
1p6
63.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
64.

Valence electrons are located...

a)

inside the nucleus

b)

in outer space

c)

on the outermost orbit of an atom

65.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
66.

What is the electron configuration for iron, Fe?

a)

1s22s22p63s23p64s23d6

b)

1s22s22p63s23p64s23d10

c)

[Xe]3d10

d)

1s22s22p63s23p64s2

67.

What is the electron configuration notation for SULFUR

a)

1s2 2s2 2p6 3s2 3p4

b)

1s2 1s2 2p6 3s2 3p2

c)

1s2 2s2 2p3 3s2 3p4

d)

1s2 2s2 2p6 2s4 3p32

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