The decay constant of a radioactive element is λ After a time 2λ-1 of the original number of radioactive nuclei about ……………….. remains undecayed.
A. 37%
B. 27%
C. 25%
D. 13.7%
Answer:D
The decay constant of a radioactive element is λ After a time 2λ-1 of the original number of radioactive nuclei about ……………….. remains undecayed.
A. 37% B. 27% C. 25% D. 13.7%