If an atom has 2 protons, that’s an atom of the element helium. If it has 7 protons, that’s nitrogen. But the logic of the periodic table also relies upon the number and organisation of electr ...

1}^{\,\,\,\,0}\textrm{e}\) Carbon-14 is a radioactive isotope of carbon. Each atom has six protons and eight neutrons. It decays to form nitrogen, which has seven protons and seven neutrons.