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Worksheets

Electron Configuration

Total questions: 20

Worksheet time: 1hrs 18mins

Name
Class
Date
1.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
2.

The second shell from the center of an atom can hold how many electrons?

a)

2

b)

6

c)

8

d)

18

3.

Valence electrons are located...

a)

inside the nucleus

b)

in outer space

c)

on the outermost orbit of an atom

4.
a)

10

b)

2

c)

8

d)

18

5.
a)

14

b)

4

c)

3

d)

28

6.

How many electrons can the d sublevel hold?

a)
8
b)
10
c)
2
d)
4
7.

What is the maximum number of electrons that an s orbital can have?

a)

1 electron

b)

2 electrons

c)

3 electrons

d)

4 electrons

8.

How many electrons can the p sublevel hold?

a)
8
b)

6

c)
2
d)
4
9.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
10.
What is this element?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
11.

The PES spectrum below is for the element _______________.

a)

O

b)

Ne

c)

N

d)

F

12.

Examine the spectrum below. Where would you expect the 2p peak for F be if it were on the same spectrum?

a)

To the left of the peak at 3.04

b)

To the right of the peak at 3.04

c)

To the left of the peak at 1.31

d)

To the right of the peak at 1.31

13.

What does the 4th peak from the left represent?

a)

The 2s electrons

b)

The 3d electrons

c)

The 2p electrons

d)

The 3s electrons

14.

Which peak (or peaks) correspond to the valence electrons?

a)

The peak at 1

b)

The peaks at 1 and 2.05

c)

The peak at 239

d)

The peaks at 239 and 22.7

15.

How many valence electrons does the element pictured in the PES spectrum below have?

a)

1

b)

2

c)

3

d)

4

16.

Which peak (or peaks) correspond to valence electrons?

a)

The peak at 0.8

b)

The peaks at 0.8 and 1.36

c)

The peak at 19.3

d)

The peaks at 19.3 and 1.36

17.

Which of these elements would have the same number of PES peaks as Fluorine?

a)

Neon

b)

Beryllium

c)

Sodium

d)

Chlorine

18.

How many peaks would be expected for a PES spectum for Calcium?

a)

2

b)

3

c)

4

d)

5

19.

What is the electron configuration for this PES graph?

a)

1s22s22p63s23p2

b)

1s22s22p63s23p1

c)

1s22s22p63s23p3

d)

1s22s22p63s2

20.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon