#samarium-147
Samarium-147
Isotope of samarium
Samarium-147 (147Sm or Sm-147) is an isotope of samarium, making up 15% of natural samarium. It is an extremely long-lived radioisotope, with a half-life of 1.06×1011 years, although measurements have ranged from 1.05×1011 to 1.17×1011 years. It is mainly used in radiometric dating.
Tue 10th
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