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WorksheetsUnit 3 Section 3 Practice: Electron Configurations
Total questions: 15
Worksheet time: 1hrs 15mins
Name
Class
Date
1.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
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.
What is the electron configuration of Sulfur using noble gas method
a)
[Ne]3s1
b)
[Ne]3s23p3
c)
[Ne]3s23p4
d)
[Ne]3s6
4.
Electrons will not pair up in a subshell until all other subshells (orientations) are full. This describes which theory of the quantum atomic model?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle
d)
Heisenberg's Uncertainty Principle
5.
What is the noble gas configuration for phosphorus?
a)
[Ar] 3p5
b)
[He] 3s2 3p5
c)
[Ne] 3s2 3p3
d)
[Na] 3s2 3p5
6.
According to the Aufbau Principle, which sublevel should starting filling with electrons directly before the 3p sublevel?
a)
3s
b)
2p
c)
4s
d)
4p
7.
Which is associated with more energy?
a)
2p
b)
2s
c)
3p
d)
1s
8.
This orbital diagram represents:
a)
C
b)
B
c)
N
d)
O
9.
The diagram above represents two electrons with
a)
a. opposite spins.
b)
b. the same spin.
c)
c. different energies.
d)
d. different energy levels.
10.
Which example shows a violation of Hund's Rule?
a)
A
b)
B
c)
C
d)
D
11.
What element's orbital notation is pictured here?
a)
Ar
b)
Br
c)
Cu
d)
Cl
12.
1s22s22p63s2, 3p64s23d104p5
How many "valence" electrons are represented in the electron configuration above?
a)
5
b)
7
c)
10
d)
2
13.
Which is the electron configuration for an oxygen atom?
a)
1s22s22p63s23p64s2
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p6
14.
What is this element?
1s22s22p63s23p6
4s23d104p6
1s22s22p63s23p6
4s23d104p6
a)
Argon
b)
Krypton
c)
Selenium
d)
Bromide
15.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
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