Explain how radioactive decay is used in carbon dating


every radioactive isotope has a measurable half-life, which is the time it takes for half the original isotope to decay to something else.So if we know how much was there originally, it's easy to calculate how long it's been decaying.Radiometric dating is also used to date archaeological materials, including ancient artifacts.Different methods of radiometric dating vary in the timescale over which they are accurate and the materials to which they can be applied.This chain eventually ends with the formation of a stable, nonradioactive daughter nuclide.Each step in such a chain is characterized by a distinct half-life.It is the principal source of information about the absolute age of rocks and other geological features, including the age of the Earth itself, and it can be used to date a wide range of natural and man-made materials.The best-known radiometric dating techniques include radiocarbon dating, potassium-argon dating, and uranium-lead dating.

explain how radioactive decay is used in carbon dating-35explain how radioactive decay is used in carbon dating-57

At the  next half-life there will be 25% of the radioactive isotope and 75%  of the stable isotope.At the next half life there will be 12.5%  radioactive and 87.5% stable.Example: Carbon-14 is a  radioactive isotope with a half life of 5,730 years.After one half-life has elapsed, one half of the atoms of the nuclide in question will have decayed into a "daughter" nuclide, or decay product.In many cases, the daughter nuclide is radioactive, resulting in a decay chain.Professor Willard Libby produced the first radiocarbon dates in 1949 and was later awarded the Nobel Prize for his efforts.

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