Which isotope of carbon is used in radioactive carbon dating

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Carbon dating is used to determine the age of biological artifacts up to 50,000 years old.

Atoms are made up of much smaller particles called protons, neutrons, and electrons.Archaeologists use the exponential, radioactive decay of carbon 14 to estimate the death dates of organic material.The stable form of carbon is carbon 12 and the radioactive isotope carbon 14 decays over time into nitrogen 14 and other particles.Scientists use a technique called radiometric dating to estimate the ages of rocks, fossils, and the earth.Many people have been led to believe that radiometric dating methods have proved the earth to be billions of years old.

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