how many protons can be found in the nucleus of an oxygen atom
How many protons neutrons and electrons are in oxygen? Oxygen has a mass number of 16.00 with atomic number 8 which means there are 8 electrons and 8 protons. The number of neutrons is always equal to the mass number- the atomic nâ¦umber. In this case it is 16 - 8= 8. Protons: 8 Neutrons: 8 (for isotope O16 the most common) Electrons: 8.