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Worksheets

Electronic Configurations

Total questions: 27

Worksheet time: 14mins

Name
Class
Date
1.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
2.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
3.

What is the electronic configuration of Lithium?

a)

2.8.8

b)

2.2.2

c)

2.8.5

d)

2.1

4.

How many electrons per shell does calcium have?

a)

2,8,8,2

b)

2,8,10

c)

2,8,2,8

d)

2,1,8,2

5.

Atoms are neutral because...

a)

They have 3 particles

b)

Neutrons and protons = 0

c)

They have equal numbers of protons and electrons

d)

They have a pH of 7

6.

Which element has the electronic configuration 2.8.2 ?

a)

fluorine

b)

hydrogen

c)

magnesium

d)

sulfur

7.
What is the electron configuration for this atom?
a)
1s22s22p6
b)
1s22s22p5
c)
1s22s22p3
d)
2s22p3
8.
What is the noble gas shorthand electron for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p4
9.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
10.
Which element is depicted from this orbital diagram
a)
Fluorine
b)
Neon
c)
Chlorine
d)
Argon
11.
Which is associated with more energy? 
a)
2p
b)
2s
c)
3p
d)
1s
12.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
13.
What is the electronic configuration of iron?
a)
1s22s22p63s23p64s23d6
b)
1s22s22p63s23p63d8
c)
1s22p63s23p64s23d6
d)
1s22s22p63s23p64s13d6
14.
How many electron can be found in a p orbital?
a)
2
b)
3
c)
4
d)
6
15.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
16.
An orbital can at most hold how many electrons?
a)
1 electron
b)
2 electrons
c)
3 electrons
d)
4 electrons
17.

What electron configuration matches an oxygen ion? (Z=8)

a)

1s22s22p63s2, 3p64s23d104p5

b)

1s22s22p4

c)

1s22s22p6

d)

1s22s22p63s23p64s23d1

18.

State the valence electronic configuration for Mg (Z=12)

a)

3s2

b)

3s2 3p1

c)

3s2 3p3

d)

3s2 3p4

19.

Determine the element that has valence electron 3s23p1

(Z of Na = 11, Al = 13, Cl = 17, Mg = 12)

a)

Na

b)

Al

c)

Cl

d)

Mg

20.

Electron must be arrange from lowest energy to highest energy.

State the rule/principle?

a)

Hund's Rule

b)

Pauli Exclusion Principle

c)

Aufbau Principle

d)

Zuhaizi Principle

21.

Which element is pictured?

a)

neon (Z=10)

b)

fluorine (Z=9)

c)

magnesium (Z=12)

d)

argon (Z=18)

22.

In 1s2, the 2 means

a)

there are 2 electrons in this level

b)

it is the 2nd energy level

c)

there is a +2 charge

d)

there is a -2 charge

23.

In 1s2, the s means

a)

the shape of the orbital is circular

b)

the shape of the orbital is figure 8

c)

there are six electrons

d)

it is neutral

24.
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
25.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
26.
Which electron configuration belongs to Copper (Cu)?
a)
1s2 2s2 2p6 3s2 3p6 4s2 3d8
b)
1s2 2s2 2p6 3s2 3p6 4s2 3d9
c)
1s2 2s2 2p6 3s2 3p6 4s2 3d10
27.
What do you start electron configuration with?
a)
1s2
b)
1d10
c)
1f14
d)
1p6

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