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15 February, 18:37

An important absolute dating measure is the decay of 147Sm to 143Nd. What type of radioactive decay is involved in this parent-daughter pair?

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  1. 15 February, 21:24
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    The correct answer is alpha decay. 147Sm is a long lived isotope that primarily decays by alpha decay. Alpha decay is a type of radioactive decays at which an atomic nucleus emit an helium nucleus. As a consequence the resultant mass number is reduced by four units and the atomic number is reduced by two units.
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