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Unit 3 Review

Total questions: 60

Worksheet time: 2hrs 45mins

Name
Class
Date
1.

Which of these is incorrect?

a)
b)
2.

This could be the dot diagram of an element with the atomic number

a)

8

b)

31

c)

19

d)

36

3.
This could be the dot diagram of 
a)
Ne
b)
Si
c)
Al
d)
Be
4.
How many electrons should Beryllium have around its Lewis dot model?
a)
1
b)
2
c)
3
d)
4
5.
How many electrons should Carbon have around its Lewis dot model?
a)
1
b)
3
c)
4
d)
5
6.
How many electrons should Flourine have around its Lewis dot model?
a)
5
b)
6
c)
7
d)
8
7.

How many electrons should Hydrogen have around its electron dot diagram?

a)

1

b)

2

c)

7

d)

8

8.

How many dots would the electron dot diagram of Helium have?

a)

1

b)

2

c)

8

d)

0

9.
This is a correct dot diagram for magnesium (Mg)
a)
true
b)
false
10.
This is a correct dot diagram for oxygen (O)
a)
true
b)
false
11.
How many electrons should Sulfur have around its Lewis dot model?
a)
5
b)
6
c)
7
d)
8
12.
What atom matches this electron configuration?
[Xe] 6s2 4f14 5d9
a)
Mercury
b)
Gold
c)
Platinum
d)
Thallium
13.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
14.
How many valence electrons does Chlorine have?
a)
5
b)
2
c)
7
d)
5
15.
What noble gas should be used to write the shorthand configuration for Te?
a)
Ar
b)
Kr
c)
Xe
d)
Sb
16.
Identify the element in Period 5 that has 1 valence electron?
a)
Rb
b)
Nb
c)
Ag
d)
Sb
17.
What element in Period 4 has 5 valence electrons?
a)
Zr
b)
As
c)
V
d)
Sb
18.
This is the correct dot diagram for sodium (Na)
a)
true
b)
false
19.

Which of the elements in the picture has correct electron dot notation?

a)

1

b)

2

c)

3

d)

4

20.
What is the noble gas configuration for Sulfur?
a)
[Ar] 3p4
b)
[He] 3s2 3p4
c)
[Ne] 3s2 3p4
d)
[Na] 3s2 3p4
21.

Which of the following represent an atom of Chlorine (Cl)?

a)

[Ar]4s24p5

b)

[Ne]3s23p5

c)

[Ne]3s24p5

d)

[Ar]4s23p5

22.

The rule that says electrons enter sublevels with the lowest energy first

a)

Pauli Principal

b)

Hund's Rule

c)

Aufbau Principal

d)

Law of Conservation of Energy

23.

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

a)

31

b)

5

c)

15

d)

4

24.

How many valence electrons are found in atoms of group 1 (aka the alkali metals)?

a)

7

b)

6

c)

4

d)

1

25.
How many valence electrons are found in atoms of group 14?
a)
4
b)
3
c)
14
d)
16
26.
[He]2s22p4 is the noble gas configuration for which element?
a)
oxygen
b)
sulfur
c)
phosphorus
d)
fluorine
27.

Whta is the noble gas notation for V?

a)

[Ar] 4s2 4d2

b)

[Kr] 4s2 3d3

c)

[Ar] 4s2 4d3

d)

[Ar] 4s2 3d3

28.

What is the electron configuration of iodine?

a)

[Kr] 5s2 4d10 5p6

b)

[Kr] 5s2 5p5

c)

[Kr] 5s2 5d10 6p6

d)

None of the above

29.

What is the noble gas configuration for the element Nitrogen (N)?

a)

1s2 2s2 2p3

b)

[He] 2s2 2p3

c)

[He] 2s2 2p6

d)

[Ne] 2p2

30.
What is the noble gas configuration for phosphorus?
a)
[Ar] 3p5
b)
[He] 3s2 3p5
c)
[Ne] 3s2 3p3
d)
[Na] 3s2 3p5
31.
What is this element? 
[Ne] 3s23p64s2
a)
Calcium
b)
Sodium
c)
Scandium
d)
Titanium
32.
What atom matches this electron configuration?
[Xe] 6s2 4f14 5d9
a)
Mercury
b)
Gold
c)
Platinum
d)
Thallium
33.

What is the noble gas configuration for Barium?

a)

[Xe]5s2

b)

[Kr] 5s2

c)

[Xe] 6s2

d)

[Kr] 6s2

34.

What is the noble gas configuration for Cobalt?

a)

[Kr] 4s2 3d7

b)

[Kr] 4s2 4d7

c)

[Ar] 4s2 3d7

d)

[Ar] 4s2 4d7

35.
Identify the element for
[Xe] 6s2 4f14 5d4
a)
Cobalt
b)
Iron
c)
Tungstun
36.

Which property tells you the size of the atom?

a)

Atomic radius

b)

Electronegativity

c)

Ionization energy

d)

All of the above

37.

What is electronegativity?

a)

Size of electron

b)

A measure of the tendency of an atom to attract electrons

c)

The energy needed to remove an electron

d)

I don't know

38.

Does fluorine (F) or arsenic (As) have greater electronegativity?

a)

Fluorine (F)

b)

Arsenic (As)

c)

I don't know

39.

Which order of elements shows a decrease in atomic radius? (The first element has the largest atomic radius and the last element has the smallest atomic radius)

a)

Boron (B), Aluminium (Al), Gallium (Ga), Indium (In)

b)

Lithium (Li), Magnesium (Mg), Calcium (Ca), Barium (Ba)

c)

Cesium (Cs), Rubidium (Rb), Potassium (K), Sodium (Na)

d)

Fluorine (F), Oxygen (O), Nitrogen (N), Carbon (C)

40.
The element with the smallest ionization energy in Period 6 is - 
a)
Rn
b)
Cs
c)
Os
d)
Tm
41.
Which has the greater Electronegativity: 
N or C?
a)
C
b)
N
42.
Which has the greater EN: 
Cl or Al?
a)
Cl
b)
Al
43.
Which has the greater EN: 
H or F?
a)
H
b)
F
44.

Which of the following has the lowest ionization energy?

a)

Sr

b)

Te

c)

Rh

d)

Xe

45.
Which element has the greater ionization energy?
a)
Strontium
b)
Boron
46.

Ionization energy __________ as you go across a period

a)

stays the same

b)

decreases

c)

increases

47.
As you move down the periodic table atoms get bigger.  This is because ____________.
a)
The atoms have more mass.
b)
The atoms have more protons.
c)
The atoms have more energy levels
d)
The atoms have more nuetrons
48.
Which atom has the largest atomic radius?
a)
potassium
b)
rubidium 
c)
francium
d)
cesium
49.
Which periodic group has the smallest atomic radius?
a)
Alkali metals
b)
Halogens
c)
Noble Gases
d)
Transition metals
50.
Ionization energy is...
a)
the energy required to add an electron to a specific atom
b)
how much energy it takes to remove an electron from an atom
c)
the energy required to shield the outer electrons from the nucleus
d)
a measure of the ability of an atom to attract electrons
51.
Which of the following will have a lower ionization energy than Scandium (Sc)?
a)
Helium (He)
b)
Titanium (Ti)
c)
Calcium (Ca)
d)
Magnesium (Mg)
52.
Which of the following will have a higher ionization energy than arsenic (As)?
a)
Gallium (Ga)
b)
Neon (Ne)
c)
Antimony (Sb)
d)
Germanium (Ge)
53.
Which of the following will have a higher electronegativity than arsenic (As)?
a)
Carbon (C)
b)
Neon (Ne)
c)
Antimony (Sb)
d)
Germanium (Ge)
54.

Electronegativity __________ from left to right across a period and __________ from top to bottom down a group.

a)

decreases, increases

b)

increases, increases

c)

increases, decreases

d)

stays the same, increases

55.

Which of the following will have a larger atomic radius than zinc?

a)

Gallium

b)

Aluminum

c)

Magnesium

d)

Strontium

56.

Put the following chemical species in order of INCREASING radius:

F-1, Kr, K+1, N-3

a)

K+1, Kr, F-1, N-3

b)

N-3, F-1, Kr, K+1

c)

Kr, F-1, N-3, K+1

d)

They are all about the same size

57.

When an atom gains an electron, the size of atom

a)

will increase

b)

will decrease

c)

will not change

58.

When an atom loses an electron the size of atom

a)

will increase

b)

will decrease

c)

will not change

59.

Which element has a greater IONIC RADIUS, sulfur (S) or chlorine (Cl)?

a)

sulfur

b)

chlorine

60.

Which element has a greater IONIC RADIUS, potassium (K) or manganese (Mn)?

a)

potassium

b)

manganese

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