Name: 
 

Atomic structure & Ions



Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
 

 1. 

An atom of iron-56 has a total of fifty-six neutrons. ____________________

 

 2. 

An atom of sodium will react easily to form an ion with a positive charge. ____________________

 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Which of the following atoms has the greatest number of neutrons?
A.
neon-24
B.
sodium-24
C.
aluminum-25
D.
magnesium-25
 

 2. 

What is the most common charge on ions formed from atoms with fifteen protons?
A.
+1
B.
–1
C.
+3
D.
–3
 
 
Use the following information to answer the next question.

Atomic Features of Elements
Element
Number of Electrons
Number of Protons
Mass Number
M
20
20
40
N
8
8
16
O
10
11
23
P
27
27
59
Q
10
10
20
R
33
33
75
 

 3. 

How many neutrons does element P have in its atom?
A.
five
C.
32
B.
27
D.
59
 

 4. 

How many neutrons does element R have in its atom?
A.
66
C.
42
B.
33
D.
75
 

 5. 

Which of the elements in the above table are ions?
A.
O
B.
Q
C.
M
D.
N
 

Matching
 
 
Match the description with the correct ion. Answers may be used as often as necessary.
A.
grp001-1.jpg
E.
grp001-5.jpg
B.
grp001-2.jpg
F.
grp001-6.jpg
C.
grp001-3.jpg
G.
grp001-7.jpg
D.
grp001-4.jpg
H.
grp001-8.jpg
 

 1. 

ion with a +3 charge and 28 protons
 

 2. 

ion with the same electron configuration as argon
 

 3. 

ion produced when alkaline earth metal atom reacts
 

 4. 

ion with an atomic number of 28 and a total of 26 electrons
 

 5. 

ion formed when a reactive metal atom loses a single electron
 



 
Check Your Work     Start Over