How is radioactive dating used to determine the age of an object quizlet - Radioactive Dating - Lawrence Berkeley National Laboratory


Half lives can vary from seconds (. radon-224 half life = 55 seconds) to millions of years (. potassium-40 half life = x 10 9 years). This has implications for radioactive waste from nuclear power stations which will need to be stored safely for a very long time.

There are several common radioactive isotopes that are used for dating rocks, artifacts and fossils. The most common is U-235. U-235 is found in many igneous rocks, soil and sediment. U-235 decays to Pb-207 with a half-life of 704 million years. Due to its long half-life, U-235 is the best isotope for radioactive dating, particularly of older fossils and rocks.


How is radioactive dating used to determine the age of an object quizlet

How is radioactive dating used to determine the age of an object quizlet



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