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Curie

The curie (abbreviation Ci) is a former unit of radioactivity, equal to 3.700×10¹⁰ decays per second, which is roughly the activity of 1 g of ²²⁶Ra. It was named after the pioneers of radiology, Marie Curie and Pierre Curie. It has been replaced by an SI derived unit, the becquerel (Bq).

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