WorksheetsSection 3: Electron Configurations (On-line Option - Fall '25)
Total questions: 23
Worksheet time: 51mins
Name
Class
Date
1.
What is the noble gas configuration for boron?
a)
[He]1s22s2
b)
[He]2s22p2
c)
[He]2s22p1
d)
[Li]2s22p1
2.
What is the noble gas configuration for phosphorus?
a)
[Ar] 3p5
b)
[He] 3s2 3p5
c)
[Ne] 3s2 3p3
d)
[Na] 3s2 3p5
3.
[Ne]3s23p5 is the noble gas configuration for which element?
a)
chlorine
b)
fluorine
c)
sulfur
d)
aluminum
4.
[Ne]3s23p5 is the noble gas configuration for which element?
a)
chlorine
b)
fluorine
c)
sulfur
d)
aluminum
5.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
6.
What atom matches this electron configuration?
1s22s22p63s2
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
7.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
8.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
9.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
10.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
11.
What do you start electron configuration with?
a)
1s2
b)
1d10
c)
1f14
d)
1p6
12.
What is this element?
1s22s22p63s2
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
13.
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
14.
There are 4 different types of subshells s,p,d,f
a)
true
b)
false
15.
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
16.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
17.
Which of these is incorrect?
a)
b)
18.
This could be the dot diagram of
a)
Ne
b)
Si
c)
Al
d)
Be
19.
How many d orbitals are there in a given sublevel?
a)
1
b)
3
c)
5
d)
7
20.
How many p orbitals are there in a sublevel?
a)
2
b)
1
c)
4
d)
3
21.
How many electrons can the d sublevel hold?
a)
8
b)
10
c)
2
d)
4
22.
What element has the valence shell configuration
3s2 3p2
3s2 3p2
a)
Al
b)
B
c)
Si
d)
Ga
23.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
100 %
