Valence Electrons and Ions Practice

You will need a Periodic Table for these practice questions.

1. What is the symbol of a calcium ion?
 
 
 
 
 

Question 1 of 12

2. What is the symbol of a bromine ion?
 
 
 
 
 

Question 2 of 12

3. What is the symbol of a nitrogen ion?
 
 
 
 
 

Question 3 of 12

4. What is the symbol of a fluorine ion?
 
 
 
 
 

Question 4 of 12

5. How many occupied electron shells does krypton have?
 
 
 
 
 

Question 5 of 12

6. How many occupied electron shells does chromium have?
 
 
 
 
 

Question 6 of 12

7. How many occupied electron shells does potassium have?
 
 
 
 
 

Question 7 of 12

8. How many occupied electron shells does radon have?
 
 
 
 
 

Question 8 of 12

9. How many valence electrons does a neutral atom of potassium have?
 
 
 
 
 

Question 9 of 12

10. How many valence electrons does a neutral atom of fluorine have?
 
 
 
 
 

Question 10 of 12

11. How many valence electrons does a neutral atom of chlorine have?
 
 
 
 
 

Question 11 of 12

12. How many valence electrons does a neutral atom of oxygen have?
 
 
 
 
 

Question 12 of 12