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The radioactive isotope of cerium - 137 ...

The radioactive isotope of cerium - 137 of weigh 8g was collected on 1st Feb. 2006 kept in a sealed tube. On 1st July, 2006, it was found that only 0.25g of it remained. The half life period of the isotope is:

A

37.5 days

B

30 days

C

25 days

D

50 days

Text Solution

Verified by Experts

The correct Answer is:
b
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