In a way, passing an array as argument always loses a dimension. The reason behind is that, for historical reasons, arrays cannot be directly copied, and thus what is really passed is a pointer. This is a common source of errors for novice programmers.
atomic number represents the protons in atom. As a example hydrogen has one proton and atomic number is 1.
The total number of protons and neutrons in an atom's nucleus is represented by its mass number, and it differs from the element's atomic number across its varying isotopes. For example, the atomic number of carbon is 6, because its nucleus contains 6 protons.