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.There are several common radioactive isotopes

## What isotope is used to date fossils?

carbon-14 dating Radiocarbon dating method Radiocarbon dating is also simply called carbon-14 dating. Carbon-14 is a radioactive isotope of carbon, with a half-life of 5,730 years (which is very short compared with the above isotopes), and decays into nitrogen.

## What is one of the most commonly used radioactive isotopes used in dating archeological artifacts?

carbon-14, the longest-lived radioactive isotope of carbon, whose decay allows the accurate dating of archaeological artifacts. The carbon-14 nucleus has six protons and eight neutrons, for an atomic mass of 14.

## Which radioactive isotope is used in dating techniques?

Radiocarbon (14C) Radiocarbon (14C) dating All living organisms take up carbon from their environment including a small proportion of the radioactive isotope 14C (formed from nitrogen-14 as a result of cosmic ray bombardment).