how many neutrons does oxygen have?
In an oxygen atom there are 8 protons and 8 electrons. Most oxygen atoms also have 8 neutrons but it is possible for an oxygen atom to have 9 or 10 neutrons. What has 7 protons 7 neutrons and 10 electrons? A nitride ionhas 7 protons 8 neutrons and 10 electrons. What has 16 neutrons and 15 electrons? The chemical symbol for Phosphorus.