The radionuclide 1311 Has a half-life of 100 hours. The activity of a m = 60mg of 1311 Is about: (N. = 6.022 x 1023 mol-1) 4.3 x 1014Bq o 5.3 x 1014 Bq o 6.3 x 1014Bq o 7.3 x 1014Bq o None of these o
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