Protons, Neutrons, and Electrons Practice Worksheet.

- Boron: Protons 5, Neutrons 6, Electrons 5
- Carbon: Protons 6, Neutrons 6, Electrons 6
- Nitrogen: Protons 7, Neutrons 7, Electrons 7
- Oxygen: Protons 8, Neutrons 8, Electrons 8
- Fluorine: Protons 9, Neutrons 10, Electrons 9
- Neon: Protons 10, Neutrons 10, Electrons 10
- Sodium: Protons 11, Neutrons 12, Electrons 11
- Magnesium: Protons 12, Neutrons 12, Electrons 12
- Aluminum: Protons 13, Neutrons 14, Electrons 13
- Silicon: Protons 14, Neutrons 14, Electrons 14
- Phosphorus: Protons 15, Neutrons 16, Electrons 15
- Sulfur: Protons 16, Neutrons 16, Electrons 16
- Chlorine: Protons 17, Neutrons 18, Electrons 17
- Argon: Protons 18, Neutrons 22, Electrons 18
- Potassium: Protons 19, Neutrons 20, Electrons 19
- Calcium: Protons 20, Neutrons 20, Electrons 20
- Iron: Protons 26, Neutrons 30, Electrons 26
- Copper: Protons 29, Neutrons 35, Electrons 29
- Zinc: Protons 30, Neutrons 35, Electrons 30
- Silver: Protons 47, Neutrons 61, Electrons 47
- Iodine: Protons 53, Neutrons 74, Electrons 53
- Gold: Protons 79, Neutrons 118, Electrons 79
- Lead: Protons 82, Neutrons 125, Electrons 82
- Uranium: Protons 92, Neutrons 146, Electrons 92