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Unit 4 Preview

Total questions: 60

Worksheet time: 1hrs 24mins

Name
Class
Date
1.

All of the elements in a period have the same number of _____.

a)

energy levels

b)

valence electrons

c)

protons

d)

electrons

2.

All of the elements in a group have the same number of _____.

a)

energy levels

b)

valence electrons

c)

protons

d)

electrons

3.

Which pair of elements has the most similar properties?

a)

Be and B

b)

O and S

c)

H and Hg

d)

Na and F

4.

How many electrons can the first energy level hold?

a)

1

b)

2

c)

8

d)

Unlimited

5.
What is the name of this element?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
6.

What element is represented in this Bohr Model?

a)

Carbon

b)

Hydrogen

c)

Aluminum

d)

Lithium

7.
What is the name of this element?
a)
Lithium
b)
Boron
c)
Carbon
d)
Neon
8.
How are electrons arranged in an atom?
a)
In groups of five
b)
In energy levels
c)
By color
d)
By shape
9.

Which element does this Bohr model represent?

a)

Aluminum

b)

Silicon

c)

Magnesium

d)

Cobalt

10.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
11.

How many energy levels in this element?

a)

2

b)

5

c)

6

d)

3

12.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
13.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
14.
Which of the following is an acceptable Lewis structure for CH3Cl?
a)
Option A
b)
Option B
c)
Option C
d)
Option D
15.
Which of the following is the correct Lewis structure for water?
a)
A
b)
B
c)
C
16.
Which of the following is the correct Lewis structure for the compound PBr3?
a)
structure A
b)
structure B
c)
structure C
d)
structure D
17.
What is the correct formula for this molecule?
a)
Si4F
b)
SiF4
c)
SiF
d)
Si4F4
18.

3. Which is a correct Lewis structure for hydrogen cyanide, HCN?

a)
b)
c)
d)
19.
This is a correct dot diagram for fluorine (F)
a)
true
b)
false
20.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
21.
 A lone pair is defined as
a)
A pair of bonding electrons
b)
One non-bonding electron
c)
A pair of non-bonding electrons
d)
A pair of electrons on the central atom
22.

How many valence electrons does Hydrogen Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

23.

How many valence electrons does Helium Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

24.

How many valence electrons does Nitrogen Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

25.

How many valence electrons does Aluminum Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

26.

How many valence electrons does Phosphorus Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

27.

How many valence electrons does Carbon Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

28.

How many valence electrons does Oxygen Have?

a)

4 Valence electron

b)

5 Valence electron

c)

6 Valence electron

d)

7 Valence electron

e)

8 Valence electron

29.
What is this element? 
1s22s22p63s23p6
4s23d104p6
a)
Argon
b)
Krypton
c)
Selenium
d)
Bromide
30.
How many electrons should Lithium have around its Lewis dot model?
a)
1
b)
2
c)
3
d)
4
31.

This is a correct dot diagram for oxygen (O)?

a)

true

b)

false

32.

What element does this Lewis Dot Digram represent?

a)

Li

b)

Al

c)

C

d)

Be

33.

Which Lewis Dot Diagram would represent Chlorine?

a)
b)
c)
d)
34.

This could be the dot diagram of

a)

Si

b)

Br

c)

B

d)

S

35.

This is a correct dot diagram for neon (Ne)

a)

true

b)

false

36.
This is the correct dot diagram for nitrogen, group 15.
a)
true
b)
false
37.

How would you draw a Lewis dot diagram for Magnesium?

a)
b)
c)
d)
38.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
39.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
40.
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
41.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
42.

What atom matches this electron configuration? 1s22s22p63s23p64s23d8

a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
43.

The 4 orbitals are

a)

s, p, d, f

b)

a, b, c, d

c)

2, 4, 6, 8

44.
How many electrons can the d sublevel hold?
a)
8
b)
10
c)
2
d)
4
45.

What atom matches this electron configuration? [Xe] 6s2

a)
Mercury
b)

Barium

c)
Platinum
d)
Thallium
46.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
47.
What noble gas should be used to write the shorthand configuration for Te?
a)
Ar
b)
Kr
c)
Xe
d)
Sb
48.

How many electrons can the f sublevel hold?

a)
8
b)
10
c)
2
d)

14

49.

What is the charge of an atom that has gained one electron?

a)
-1
b)
-2
c)
+1
d)
+2
50.

Which would be the correct electron configuration for the Fe+4 ion?

a)

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

b)

1s2 2s2 2p6 3s2 3p6 4s2 3d3

c)

1s2 2s2 2p6 3s2 3p6 3d4

d)

1s2 2s2 2p6 3s2 3p6 4s1 3d6

51.

Which element is represented by this orbital notation?

a)

carbon

b)

nitrogen

c)

oxygen

d)

fluorine

52.

Which element is represented by this orbital notation?

a)

neon

b)

sodium

c)

magnesium

d)

aluminum

53.
An electron occupies the lowest energy orbital that can receive it.
a)
Hund’s rule
b)
Pauli exclusion principle
c)
Bohr model of the atom
d)
Aufbau principle
54.
All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron.
a)
Aufbau principle
b)
Pauli exclusion principle
c)
Hund’s rule
d)
Core Notation
55.
No two electrons in the same atom can have the same four quantum numbers.
a)
Aufbau principle
b)
Pauli exclusion principle
c)
Hund’s rule
d)
Noble gas notation
56.
Which guideline, Hund’s rule or the Pauli exclusion principle, is violated in the following orbital diagrams?
a)
Hund's
b)
Aufbau's
c)
Pauli's Exclusive
57.
Which guideline, Hund’s rule or the Pauli exclusion principle, is violated in the following orbital diagrams?
a)
Aufbau's
b)
Hund's
c)
Pauli exclusive
58.
Electrons are paired based on their spin directions, clockwise and counterclockwise, is what electron configuration rule?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle
59.
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
60.
Electrons are paired based on their spin directions, clockwise and counterclockwise, is what electron configuration rule?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle

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