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06-Jan-2020 18:33

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The only exceptions are nuclides that decay by the process of electron capture, such as beryllium-7, strontium-85, and zirconium-89, whose decay rate may be affected by local electron density.

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Different methods of radiometric dating vary in the timescale over which they are accurate and the materials to which they can be applied.

For organic materials, the comparison is between the current ratio of a radioactive isotope to a stable isotope of the same element and the known ratio of the two isotopes in living organisms.



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