This is useful for as long as 60,000 years. The amount of carbon 14 that remains after the death of a living thing is a measure of that time. Other isotopes of carbon are either stable, or have a short half life. This long half life makes Carbon 14 exist for enough time to be detected. It is generated in the Earth’s atmosphere by Cosmic rays and decays with a Half-life of about 5700 years. Carbon-14 is also called “carbon 14” or “radiocarbon”, or in symbols: 14C, or 14 6C, or C 14.Ĭarbon 14 is the only radioactive isotope of carbon found in nature. 6 is the Atomic number for all carbon isotopes. It has an atomic nucleus containing 8 neutrons and 6 protons. Carbon-14 is an isotope of the element carbon, so named because it has an atomic mass of 14.
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