If we knew the precise length of reign for every Egyptian king, chronology would be no problem.
However, we do not even know the number of kings for all periods, and there is also the possibility that reigns overlapped by coregency or in times of political disunity.
The C14 is a isotope of carbon, which is otherwise C12 or C13.
The C means carbon, the number gives the atomic weight rounded.
The C-14 Method or Radiocarbon Method is the oldest physical method, which allows to determine the age of an object, if it contains carbon.
Two are called C12 and C13, carbon with an atomic weight of twelve or thirteen respectively - which are the normal and stable carbon - and the last one is C14, an isotope of carbon, which is subject to a very slow and harmless radioactive decay.The dating of remains is essential in archaeology, in order to place finds in correct relation to one another, and to understand what was present in the experience of any human being at a given time and place.Inscribed objects sometimes bear an explicit date, or preserve the name of a dated individual. However, only a small number of objects are datable by inscriptions, and there are many specific problems with Egyptian chronology, so that even inscribed objects are rarely datable in absolute terms.It was developed in the 1950s by a team of scientists under Professor Willard F. Libby received the Nobel Prize in Chemistry "for his method to use Carbon-14 for age determinations in archaeology, geology, geophysics, and other branches of science." in 1960.First a word on how the name of this method is written.