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Half-life for certain radioactive elemen...

Half-life for certain radioactive element is `5 min`. Four nuclei of that element are observed at a certain instant of time. After `5` minutes
STATEMENT-I: It can be definitely said that two nuclei will be left undecayed.
STATEMENT-II: After half-life that is `5` minutes, half of totan nuclei will disintegrate. So, only two nuclei will be left undecayed.

A

A is correct & R is correct expianation of A

B

Both are correct But R is not correct explanation of A

C

A is incorrect & R is correct

D

Both are incorrect

Text Solution

Verified by Experts

The correct Answer is:
D
Radioactivity law is valid for large samples
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Knowledge Check

  • Half life of radioactive element is 5 min. At the end of 20 min its ________% quantity is disintegrated

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    B
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    D
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