Protons, Neutrons, Electrons

I learned how to identity each element in the periodic table and how to fin the mass number of each when they fo not give it to you. I also learned that the atomic number, neutrons and the protons are all equal. All elements have a chemical symbol, number of protons, number of neutrons, number of electrons, mass number, and a atomic weight. Mass number is the number of protons plus neutrons together.