Radium(Atomic no. 87 and mass no.221) is a radioactive substance having half life of 4 days.Find the probability that a nucleus undergoes decay after two half lives.
A.1
B.1/2
C.3/4
D.1/4

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1 Answers
Anurag Ghosh
·20140128 17:42:29
Ans. is 1/2 which should have been 3/4....
 Akash Anand Answer is wrong. It must be 3/4, you check the source of this question again.Upvote·0· Reply ·20140128 21:37:42