Oxygen has 8 protons, 8 neutrons, and 8 electrons.
#1 Oxygen Protons
- Protons = atomic number
From the periodic table, find the atomic number of oxygen.
The atomic number of oxygen is 8. Hence, oxygen has a total of 8 protons.
#2 Oxygen Neutrons
- Neutrons = atomic mass – atomic number
The atomic mass of oxygen is 15.999, so we’ll take the roundup value as 16. And the atomic number of oxygen is 8.
Subtract the atomic number (8) from the atomic mass (16). Hence, oxygen has a total of 16 – 8 = 8 neutrons.
#3 Oxygen Electrons
- Electrons = atomic number
The atomic number of oxygen is 8. Hence, oxygen has a total of 8 electrons.
Next: Fluorine Protons Neutrons Electrons