4. Gold: 79 Protons 118 Neutrons 79 Electrons
Potassium: Protons 19 Neutrons 20 19 Electrons
Copper: Protons 29 Neutrons 35 electrons 29
Oxygen: Protons 8 Neutrons 8 Electrons 8
Argon: Protons 18 Neutrons 22 Electrons 18
And for the Element with the symbol Ca: Calcium: Protons 20 Neutrons 20 Electrons 20
1. Atomic Number
2. Atomic Mass
3. How many protons are in the atom or in other words the atomic number.
