Curie

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Name for the former unit of activity. The activity of 1 curie, symbol:Ci, is equal to the decay of 3.7·10¹⁰ (37 billion) atoms of a radionuclide per second. The activity unit curie was replaced by the 'Becquerel'. 1 curie = 3.7·10¹⁰ Becquerels.

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