- Sodium (Na): Atomic number 11, Mass number 23, Protons 11, Electrons 11, Neutrons 12
- Beryllium (Be): Atomic number 4, Mass number 9, Protons 4, Electrons 4, Neutrons 5
- Carbon (C): Atomic number 6, Mass number 12, Protons 6, Electrons 6, Neutrons 6
- Lithium (Li): Atomic number 3, Mass number 7, Protons 3, Electrons 3, Neutrons 4
- Oxygen (O): Atomic number 8, Mass number 16, Protons 8, Electrons 8, Neutrons 8
- Sulfur (S): Atomic number 16, Mass number 32, Protons 16, Electrons 16, Neutrons 16
- Cobalt (Co): Atomic number 27, Mass number 59, Protons 27, Electrons 27, Neutrons 32
- Iron (Fe): Atomic number 26, Mass number 56, Protons 26, Electrons 26, Neutrons 30
- Nitrogen (N): Atomic number 7, Mass number 14, Protons 7, Electrons 7, Neutrons 7
- Sodium (Na): Atomic number 11, Mass number 23, Protons 11, Electrons 11, Neutrons 12
- Rubidium (Rb): Atomic number 37, Mass number 85, Protons 37, Electrons 37, Neutrons 48
- Silicon (Si): Atomic number 14, Mass number 28, Protons 14, Electrons 14, Neutrons 14
- Aluminium (Al): Atomic number 13, Mass number 27, Protons 13, Electrons 13, Neutrons 14
- Phosphorus (P): Atomic number 15, Mass number 31, Protons 15, Electrons 15, Neutrons 16
- Nickel (Ni): Atomic number 28, Mass number 59, Protons 28, Electrons 28, Neutrons 31
- Copper (Cu): Atomic number 29, Mass number 64, Protons 29, Electrons 29, Neutrons 35
- Zinc (Zn): Atomic number 30, Mass number 65, Protons 30, Electrons 30, Neutrons 35
- Yttrium (Y): Atomic number 39, Mass number 89, Protons 39, Electrons 39, Neutrons 50
- Boron (B): Atomic number 5, Mass number 11, Protons 5, Electrons 5, Neutrons 6
Parent Tip: Review the logic above to help your child master the concept of atomic number and mass number worksheets.
