answer: The atoms of different elements all have different numbers of protons. Meanwhile, the mass number of an atom consists of the total number of protons and neutrons it contains
The atoms of different elements all have different numbers of protons. Meanwhile, the mass number of an atom consists of the total number of protons and neutrons it contains. An atom's mass number can never be smaller than its atomic number, and while it can be the same it is normally larger.
