Chapter 1: Introduction To The Atom - Atomic Structure Practice Worksheet

Element

 Atomic Number Mass Number Isotope # Protons # Electrons # Neutrons #Energy Levels #Outer Electrons #Electrons Lost/Gained Ion Symbol
23

Na

11
Al 27  

 

 
37 87  

 

 
79  

 

 

 34
 

 

 

 15 16
65

Cu

29
34  

 

 

 6
130  

 

 

 1 gained