Which of the following statement(s) are true about the atoms of any element? The number of protons in an atom of an element is unique to each element. The number of protons and neutrons in an atom of an element is unique to each element A proton (Links to an external site.) in an atom of one element is identical to a proton (Links to an external site.) in an atom of another element. The number of protons in an atom of an element is the same for all elements.