They continue to decay going through various transitional states until they finally reach stability. Radioisotopes are unstable isotopes: they spontaneously decay (emitting radiation in the process - thus making them radioactive). An isotope is one of two or more atoms which have the same number of protons in their nuclei, but a different number of neutrons. ![]() Radiometric dating techniques take advantage of the natural decay of radioisotopes. ![]() ![]() ![]() Radiometric dating is the primary dating scheme employed by scientists to determine the age of the earth.
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