問題詳情
1.將一6×107 Bq的198Au置入病患體內，於2.69天後取出。已知198Au的半衰期為2.69天，則此段時間內的總衰變次數為何？
(A)1.0×1013
(B)2.0×1013
(C)4.0×1013
(D)8.0×1013
(A)1.0×1013
(B)2.0×1013
(C)4.0×1013
(D)8.0×1013
參考答案
答案：A
難度：適中0.627027
統計：A(116),B(23),C(12),D(4),E(0)
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