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Electron Configuration Review

Total questions: 27

Worksheet time: 2hrs 15mins

Name
Class
Date
1.
This "rule" of Quantum Chemistry states that it is impossible to know both the position and velocity of an electron at the same time.
a)
Hund's Rule
b)
Heisenberg Uncertainty Principle
c)
Aufbau Principle
d)
Pauli Exclusion Principle
2.

Which shape represents the shape of an "s" orbital?

a)
b)
c)
d)
3.

Which shape represents the shape of an "p" orbital?

a)
b)
c)
d)
4.

Which shape represents the shape of an "d" orbital?

a)
b)
c)
d)
5.

How many electrons can a single orbital hold?

a)

1

b)

2

c)

3

d)

5

6.
How many electrons can the p sublevel hold?
a)
14
b)
10
c)
2
d)
6
7.

Which of the following Aufbau diagrams are incorrect? Check all that apply.

a)

A

b)

B

c)

C

d)

D

8.
Which is associated with more energy? 
a)
2p
b)
2s
c)
3p
d)
1s
9.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
10.
Which element is depicted from this orbital diagram
a)
Fluorine
b)
Neon
c)
Chlorine
d)
Argon
11.

What is the symbol represented by this Aufbau diagram?

a)

C

b)

B

c)

N

d)

O

12.

What atom matches this electron configuration?

1s2 2s2 2p6 3s2

a)

Neon

b)

Magnesium

c)

Aluminum

d)

Potassium

13.

What atom matches this electron configuration?

1s22s22p63s23p64s23d10

a)

Zinc

b)

Copper

c)

Nickel

d)

Germanium

14.

What is this element?

1s22s22p63s23p64s23d104p6

a)

Argon

b)

Krypton

c)

Selenium

d)

Bromide

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.

Which electron configuration belongs to Nickel (Ni)?

a)

1s2 2s2 2p6 3s2 3p6 4s2 3d6

b)

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

c)

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

17.

Choose the correct shortcut configuration for iodine.

a)

[Ar]4s24d104p5

b)

[Kr]5s24d105p5

c)

[Xe]5s25d105p5

d)

none of the above

18.

What is the abbreviated electron configuration for barium?

a)

[Xe] 6s2

b)

[Rn] 6s2

c)

[Ar] 4s2 3d10 4p5

d)

[He] 2s2 3p1

19.

How many unpaired electrons does Germanium have?

Hint: Create an Aufbau diagram to figure it out.

a)

1

b)

2

c)

3

d)

4

20.

How many valence electrons are present in the following electron configuration:

1s22s22p63s23p64s23d104p3

a)

3

b)

8

c)

5

d)

18

21.

Which electron configuration belongs to a Chloride (Cl-) ion?

a)

1s2 2s2 2p6 3s2 3p5

b)

1s2 2s2 2p6 3s2 3p6

c)

1s2 2s2 2p6 3s2 3p64s24d104p6

d)

1s2 2s2 2p6 3p8

22.

What electron configuration matches an oxide (O2-) ion?

a)

1s22s22p63s2, 3p64s23d104p5

b)

1s22s22p4

c)

1s22s22p6

d)

1s22s22p63s23p64s23d1

23.

In which of the following groups are the three species isoelectronic?

a)

S2¯, K+, Ca2+

b)

Sc, Ti, V2+

c)

O2¯, S2¯, Cl¯

d)

Mg2+, Ca2+, Sr2+

24.

The Sr2+ ion is isoelectronic with what -1 ion?

a)

F1-

b)

Cl1-

c)

Br1-

d)

K1-

e)

Ar1-

25.

1s2 2s2 2p6 is the electron configuration of which ION?

a)

Aluminum

b)

Chloride

c)

Beryllium

d)

Boron

e)

Neon

26.

What is the electron configuration for the Sodium Ion, Na+?

a)

1s22s22p63s1

b)

1s22s22p63s23p6

c)

1s22s22p63s2

d)

1s22s22p6

27.

[Ar] 4s23d7 is the short-hand electron configuration for the atom Cobalt. What would be the electron configuration for the ion, Co2+?

a)

[Ar] 4s23d5

b)

[Ar] 3d7

c)

[Ar] 4s13d6

d)

[Ar] 4s23d9

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