Isotope of carbon dating

Radioactive decay occurs so that nuclei can gain greater stability. Things that were never alive or are more than ~70,000 years old have to be dated by analyzing for other isotopes or isoptopic ratios.

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They are carbon-12 (carbon "itself") and carbon-13. It is used in determining the age of fossils, geologic, or archaeological specimens.

By allowing the establishment of geological timescales, it provides a significant source of information about the ages of fossils and the deduced rates of evolutionary change.

Radiometric dating is also used to date archaeological materials, including ancient artifacts.

The resulting radiocarbon combines with atmospheric oxygen to form radioactive carbon dioxidewhich is incorporated into plants by photosynthesis ; animals then acquire 14 C by eating the plants.

When the animal or plant dies, it stops exchanging carbon with its environment, and from that point onwards the amount of 14 C it contains begins to decrease as the 14 C undergoes radioactive decay.

Carbon dating is a method of telling approximately how old an ancient object is. Carbon atoms are contained in every part of every cell of allliving things on Earth.

Most carbon atoms (98.89%) are calledcarbon-12 because they have 6 neutrons and 6 protons in theirnuclei.

Isotopes can be used as tracers to determine the course, direction and rate of a chemical reaction. This book is licensed under a Creative Commons by-nc-sa 3.

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