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# For I131, half life is 8 days, the activity of an 8μg sample of I is ?3.18×1015days−13.18×10−15days−13.18×1012days−13.18×1018days−1

A
3.18×1015days1
B
3.18×1015days1
C
3.18×1012days1
D
3.18×1018days1
Solution
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