Isotopes protons neutrons electrons practice problems

Atoms, Molecules, and Ions

In this set of practice problems, we will go over the atomic structure, subatomic particles, determining the number of protons, neutrons, and electrons, as well as writing correct chemical formulas. 

 

Check Also 

Practice

1.

All the atoms of a given element have the same ________.

a) number of neutrons
b) number of protons
c) atomic mass
d) number of electrons
e) volume

answer
This content is available to registered users only. Click here to Register! By joining Chemistry Steps, you will gain instant access to the answers and solutions for all the Practice Problems and the powerful set of General Chemistry 1 and 2 Summary Study Guides.  
2.

Which atom has the smallest number of protons?

a) Li
b) Mn
c) Be
d) Ag
e) As

answer
This content is available to registered users only. Click here to Register! By joining Chemistry Steps, you will gain instant access to the answers and solutions for all the Practice Problems and the powerful set of General Chemistry 1 and 2 Summary Study Guides.  
3.

Which atom has the largest number of protons?

a) 11B
b) 14C
c) 14N
d) 19F
e) 18O

answer
This content is available to registered users only. Click here to Register! By joining Chemistry Steps, you will gain instant access to the answers and solutions for all the Practice Problems and the powerful set of General Chemistry 1 and 2 Summary Study Guides.  
4.

Which combination of protons, neutrons, and electrons is correct for the 59Ni isotope?

A) 29 p+, 30 n°, 29 e-
B) 28 p+, 30 n°, 28 e-
C) 28 p+, 31 n°, 28 e-
D) 28 p+, 32 n°, 31 e-
E) 27 p+, 32 n°, 27 e-

answer
This content is available to registered users only. Click here to Register! By joining Chemistry Steps, you will gain instant access to the answers and solutions for all the Practice Problems and the powerful set of General Chemistry 1 and 2 Summary Study Guides.  
5.

How many electrons are in the O2- ion?

a) 9
b) 10
c) 8
d) 11
e) 6

answer
This content is available to registered users only. Click here to Register! By joining Chemistry Steps, you will gain instant access to the answers and solutions for all the Practice Problems and the powerful set of General Chemistry 1 and 2 Summary Study Guides.  
6.

What is the average atomic mass of the element X if it contains 92.23 % of isotope X-27.976, 4.683 % of  X-28.976, and 3.087 % X-29.973?

answer
This content is available to registered users only. Click here to Register! By joining Chemistry Steps, you will gain instant access to the answers and solutions for all the Practice Problems and the powerful set of General Chemistry 1 and 2 Summary Study Guides.  
Solution
This content is available to registered users only. Click here to Register! By joining Chemistry Steps, you will gain instant access to the answers and solutions for all the Practice Problems and the powerful set of General Chemistry 1 and 2 Summary Study Guides.  
7.

Complete the following table using the periodic table of elements. Add the specific isotope with the charge where needed.

answer
This content is available to registered users only. Click here to Register! By joining Chemistry Steps, you will gain instant access to the answers and solutions for all the Practice Problems and the powerful set of General Chemistry 1 and 2 Summary Study Guides.  
Solution
This content is available to registered users only. Click here to Register! By joining Chemistry Steps, you will gain instant access to the answers and solutions for all the Practice Problems and the powerful set of General Chemistry 1 and 2 Summary Study Guides.  

Leave a Comment