It would have 8 neutrons. Since the atomic number = the number of protons in the atom, oxygen has 8 protons. If the atomic mass is made up of protons and neutrons, then it would have 8 neutrons as well (8+8=16)
2Na + O2 -> NaO2
that name is :
sodium peroxide
Answer:
If you add the masses of all the products after fission, they are LESS than the mass of the reactants.
Explanation:
A nuclear fission reaction is a radioactive reaction which in which a heavy nucleus spontaneously disintegrates into 2 lighter nuclei and some neutrons with a release of large amount of energy.
When nuclear fission occurs, a mass deficit between the decaying nuclei and the product occurs. It is this mass that actually yields the energy that is produced as a by product of the reaction.
You need to look at the Periodic table. The atomic number is the number of protons. When you subtract the atomic number from the mass number, you get the number of neutrons. i.e. for Beryllium (Be) the atomic number is 4, so it has 3 protons. Its atomic mass about 9, so 9-4=5. Therefore, there are 5 neutrons.