Carbon-12, the most prevalent carbon isotope, derives its name from its atomic mass of 12 atomic mass units, determined by the composition of protons and neutrons in its nucleus. It dominates the natural abundance of carbon, comprising approximately 98.9% of all carbon atoms. In contrast, carbon-13 and carbon-14, the other two carbon isotopes, occur in lesser quantities and proportions. Being stable and resistant to radioactive decay, carbon-12 holds great significance as a vital element for sustaining life on our planet.
The most common isotope of carbon is carbon-12. It is called carbon-12 because it has an atomic mass of 12 atomic mass units, which is determined by the number of protons and neutrons in its nucleus. Carbon-12 is abundant in nature, making up approximately 98.9% of all carbon atoms. The other two isotopes of carbon, carbon-13 and carbon-14, are less common and exist in much smaller proportions. Carbon-12 is stable and does not undergo radioactive decay, which makes it an essential element for life on Earth.
The most common isotope of carbon is carbon-12.
