How many protons neutrons and electrons are in a cubic cubit of beryllium?

Beryllium has an atomic number of 4, which means it has 4 protons and, in its neutral state, 4 electrons. The most common isotope of beryllium has 5 neutrons. Therefore, in a cubic cubit of beryllium, there would be 4 protons, 5 neutrons, and 4 electrons per atom, but the total number of each would depend on the number of beryllium atoms in that cubic volume.