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Optional Reivew for Test: Periodic Trends and Bonding

Total questions: 64

Worksheet time: 2hrs 18mins

Name
Class
Date
1.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
2.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
3.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
4.

Which is the correct structure for NH3?

Pictures correspond with a-d.

a)

Option A.

b)

Option B.

c)

Option C.

d)

Option D.

5.

In a Lewis structure of a polyatomic ion, what do you do  with the total number of valence electrons if your ion has a -2 charge (such as the carbonate ion)?

a)

Add 2 to the valence number

b)

Subtract 2 from the valence number

c)

Multiply the valence number by 2

d)

Divide the valence number by 2

6.
Which of the following is the correct Lewis structure for CH2O?
a)
Option A
b)
Option B
c)
Option C
d)
Option D
7.
How many covalent bonds does carbon need to form in order to have a full octet?
a)
2
b)
3
c)
4
d)
5
8.
In the correct Lewis structure for water, how many unshared pairs of electrons will oxygen have?
a)
1
b)
4
c)
3
d)
2
9.

Which of the following is the correct Lewis Dot Diagram for Hydrogen Cyanide, HCN?

a)

A

b)

B

c)

C

d)

D

10.
Which LD Diagram is correct for chloromethane (CH3Cl)
a)
A
b)
B
c)
C
d)
D
11.
What is a double bond?
a)
a bond between two atoms
b)
one pair of electrons shared between two atoms
c)
two pairs of electrons shared between two atoms
d)
James Bond's brother
12.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
13.

Which is the correct molecular structure for carbon dioxide CO2?

a)
b)
c)
d)
14.

Covalent bonds are formed between...

a)

two or more metal atoms

b)

two or more non-metal atoms

c)

a metal and a non-metal atom

15.

Oxygen is a diatomic molecule. Oxygen is in Group 6. How many electrons are shared in this covalent bond?

(a)  

16.
Three pairs of electrons are shared in a
a)
Single bond
b)
Double bond
c)
Triple bond
17.
 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
18.

What is a valence electron?

a)

electron found in a middle shell

b)

electron found in outermost shell

c)

electron found in innermost shell

d)

electron not found in a shell

19.

As you move down a group, atomic radius increases because ____.

a)

you add more and more neutrons

b)

you add more and more protons

c)

you add more and more shells (energy levels)

d)

you add more atomic mass

20.

The atom with the largest atomic radius in Group 18 is ___.

a)

Ar

b)

He

c)

Kr

d)

Rn

21.
As you move across the periodic table from left to right, the atomic radius decreases.  This is because - 
a)

the number of protons increases, so attraction to electrons increases

b)

the number of energy levels increases

c)

the number of electrons decreases

d)

the atomic mass increases

22.

The atom with the largest atomic radius in Period 4 (row 4) is ____.

a)

K

b)

Kr

c)

Fe

d)

Fe

23.
Electronegativity is...
a)

the ability of an atom to attract/ accept electrons

b)

the ability of an atom to lose electrons

c)

the energy required to remove an electron from a specific atom

d)

how easy it is to make friends. 

24.

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

25.

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

a)

Gallium

b)

Aluminum

c)

Magnesium

d)

Strontium

26.
Which of the following will have a higher electronegativity than arsenic (As)?
a)
Carbon (C)
b)
Neon (Ne)
c)
Antimony (Sb)
d)
Germanium (Ge)
27.

Ionization energy is defined as ____.

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

28.

Francium (Fr) has the lowest ionization energy in Group 1 because ____.

a)

it has the smallest number of valence electrons

b)

it has the greatest atomic mass

c)

it has the greatest number of protons, so it attracts its electrons the strongest

d)

its 1 valence electron is very far from the nucleus, so little energy is needed to remove it

29.

Atomic radius is defined as ____.

a)

the relative size of the atom's nucleus

b)

the relative size of the atom's electron cloud

c)

the energy required to shield the outer electrons from the nucleus

d)

a measure of the ability of an atom to attract electrons

30.

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)

31.
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)
32.

List the following elements in order of INCREASING atomic radius:

Cs, S, Co

a)

They are all about the same

b)

Co, Cs, S

c)

S, Co, Cs

d)

Cs, Co, S

33.

Put the following chemical species in order of INCREASING radius:

F-1, Kr, K+1, N-3 (throwing out this question)

a)

choose this answer...

b)

don't choose this one

34.

How many valence electrons in this group?

a)

1

b)

2

c)

3

d)

4

35.

How many valence electrons in Iodine?

a)

35

b)

3

c)

5

d)

7

36.

Between B, C, N, F, which is most electronegative?

a)

B

b)

C

c)

N

d)

F

37.

What is the smallest atom on the periodic table?

a)

H

b)

He

c)

Li

d)

Ne

38.

Which of the following halogens has the greatest electronegativity?

a)

Chlorine (Cl)

b)

Bromine (Br)

c)

Iodine (I)

d)

Astatine (At)

39.

A horizontal row of elements is called:

(Select all that apply)

a)

Family

b)

Energy level

c)

Group

d)

Period

40.
Which element has the greatest ionization energy: Aluminum (Al)    or    Chlorine (Cl)?
a)
Aluminum (Al)
b)
Chlorine (Cl)
41.
Despite the fact that lithium is prescribed in the form of lithium salt for the treatment of bipolar disorder, the element lithium is unsuitable for human consumption due to its violent reaction with water. 
What could be a possible reason for its reaction with water?
a)
Low atomic mass.
b)
Low ionization energy.
c)
Oxidation state of +1.
d)
High electron affinity.
42.
Which of the following electron configurations represents an element with the largest atomic radius?
a)
1s22s22p63s1
b)
1s22s22p63s23p64s2
c)
1s22s22p63s23p63d104s1
d)
1s22s22p63s23p2
43.
Arrange the following isoelectronic ions in INCREASING order of atomic radius.
a)
S2- < Cl- < K+ < Ca2+ < Sc3+
b)
K+ < Ca2+ < Sc3+ < Cl- < S2-
c)
Sc3+ < Ca2+ < K+ < Cl- < S2-
d)
Cl- < S2- < K+ < Ca2+ < Sc3+
44.
The bar graph above represents four elements and their respective ionization energies. Based on the organization of the modern periodic table, how would these elements be found on the periodic table?
a)
They are in the same period with W being furthest left.
b)
They are in the same period with W being furthest right.
c)
They are in the same group with W being furthest to the bottom.
d)
They are in a diagonal line with W being at the bottom right.
45.
Which of the following is true for alkaline earth metals as their atomic number increases?
a)
The atomic radius decreases.
b)
Ionization energy decreases.
c)
The number of valence electrons increases.
d)
The Coulombic attraction increases.
46.
Which of the following is true about a sulfur atom and a chlorine atom?
a)
Sulfur is larger and has higher ionization energy.
b)
Sulfur is larger and has lower ionization energy.
c)
Sulfur is smaller and has higher ionization energy.
d)
Sulfur is smaller and has lower ionization energy.
47.
Put the following in order of increasing ionization energy:Cobalt, Tungsten, Ruthenium
a)
Tungsten, Ruthenium, Cobalt
b)
Cobalt, Tungsten, Ruthenium
c)
Ruthenium, Cobalt, Tungsten
d)
Cobalt, Ruthenium, Tungsten
48.

Element W would have how many valence electrons?

a)

5

b)

6

c)

7

d)

8

49.

What is the formal charge on oxygen for the hydronium ion H3O+?

a)

+3

b)

+1

c)

-2

d)

-3

e)

0

50.

What is the formal charge on the oxygen at the the bottom left in this Lewis dot structure?

a)

0

b)

+1

c)

-1

d)

-2

51.

What is the picture showing?

a)

All of the resonance structures for carbonate.

b)

The formal charge on each atom in carbonate.

c)

The electronegativity for carbonate.

d)

The ionization energy for carbonate.

52.

What is the formal charge on the bromine atom in this Lewis dot structure?

a)

-1

b)

+1

c)

-2

d)

+2

53.
For carbonate ions, how many resonance structures can be drawn ?
a)
2
b)
3
c)
4
d)
5
54.

Draw the best electron dot structure for PCl3. How many pairs of non-bonded (lone pair) electrons are there on P?

a)

Zero

b)

One

c)

Two

d)

Three

55.

Choose the electron dot diagram that correctly shows the bonding in methane CH4.

a)

A

b)

B

c)

C

d)

D

56.

Are A and B resonance structures of each other?

a)

Yes

b)

No

c)

Cannot be determined from the information given

57.

The formal charge on carbon in the molecule shown is _______.

a)

0

b)

+1

c)

+2

d)

+3

e)

-1

58.

In the resonance form of ozone shown, the formal charge on the central oxygen atom is _______.

a)

0

b)

+1

c)

-1

d)

+2

e)

-2

59.

Which two elements are most likely to form a covalent bond?

a)

C and Ca

b)

P and F

c)

Sr an S

d)

Li and Cl

e)

Al and I

60.

Which of the following compounds contains BOTH ionic and covalent bonds?

a)

NaCl

b)

Li2CO3

c)

CO2

d)

MnO2

e)

HCN

61.

Choose the electron dot diagram that correctly shows the bonding in H2N2:

a)

A

b)

B

c)

C

d)

D

e)

E

62.

How many resonance structures can be drawn for NOCl?

a)

0

b)

1

c)

2

d)

3

63.

What is the total number of valence electrons in the Lewis structure of the

NO2-1 polyatomic ion?

a)

8

b)

18

c)

24

64.

CHCl3 has how many double bonds?

a)

0

b)

1

c)

2

d)

3