|
Illustration of the Atomic Structures of Hydrogen and Helium Key: electrons (  ), protons
( )
and neutrons ( )
|
|
Illustration of the Atomic Structures of Hydrogen and Helium Key: electrons ( ), protons
()
and neutrons ()
|
| Hydrogen z = 1, mass = 1 |
Helium z = 2, mass = 4 |