Argon argon dating accuracy
Most nitrogen atoms have seven protons and seven neutrons, so their atomic mass is 7 7 = 14.The fact that it has seven protons is what makes it nitrogen.The top number is the Mass Number for each isotope.The Mass Number for any isotope is the addition of all the protons and neutrons in the nucleus.These include nitrogen (78 percent), oxygen (21 percent), argon (0.9 percent), carbon dioxide (0.03 percent), varying amounts of water vapor, and trace amounts of hydrogen, ozone, methane, carbon monoxide, helium, neon, krypton, and xenon.Cosmic rays, which contain even higher levels of energy than ultraviolet light, cause some of the atoms in the upper atmosphere to fly apart into pieces.Neutrons that come from these fragmented molecules run into other molecules.When a neutron collides into a Nitrogen-14 atom, the Nitrogen-14 turns into Carbon-14 along with a proton.
Since all the atoms are carbon, they should all have an Atomic Number of 6.
Since protons and neutrons weigh about the same, the atomic mass of ordinary carbon is 6 6 = 12.
It is called "Carbon-12," which is abbreviated "C." The fact that the atom has six protons is what makes it carbon.
Two other reactions (Oxygen-17 reacting with neutrons, and He-4 reacting with Carbon-13) both produce Carbon-14, but with much smaller yields.
It has been estimated that about 21 pounds of The amount of nitrogen in the atmosphere is effectively constant.
Sooner or later, one of the neutrons spits out an electron and becomes a proton.