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.

The nitrogen atoms contained seven protons and seven neutrons, and when they collided with U-238, all except five of the neutrons joined its nucleus. The seven added protons raised the atomic ...

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 ...

These ancient processes, still active in modern cells, often involve iron-sulfur metalloproteins, which handle challenging ...