![]() However, Franz Kurie had suggested the existence of Carbon 14 in 1934.ġ. Martin Kamen and Sam Ruben are credited with the discovery of Carbon 14 in 1940. Carbon 12 contains a larger portion of living organisms when compared to Carbon 14 Before 1959, oxygen was the standard form used and it was in 1961 that Carbon 12 replaced oxygen as the standard form of measurement.Ĭarbon 14 is also about 20 per cent heavier than Carbon 12. As Carbon 14 decays, it is used for the determination of archaeological samples.Ĭarbon 12 has its own importance, as it is used as a standard form for measuring the atomic weight of all elements. ![]() Carbon 12 does not go through radioactive decay. Carbon 12 is stable because it contains the same number of protons and neutrons and the Carbon 14 is unstable because there of the difference in their proton and neutron numbers.Īs Carbon 14 is unstable, it disintegrates or goes through radioactive decay. ![]() Another thing that can be seen is that Carbon 12 is a stable isotope and Carbon 14 is an unstable isotope. When comparing the two isotopes, Carbon 14 is rare. Carbon 12 has six protons and six neutrons and Carbon 14 has 6 protons and eight neutrons. These two Carbon isotopes mainly differ in their mass number the mass number of Carbon 12 is 12 and that of Carbon 14 is 14.Ĭarbon 12 comes with the same number of protons and neutrons, whereas Carbon 14 has different proton and neutron numbers. Of these two isotopes, Carbon 12 is most abundant. Carbon 12 and Carbon 14 are isotopes of Carbon.
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