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The half life of radioactive isotope is ...

The half life of radioactive isotope is 3 hour. If the initial mass of isotope were 256 g, the mass of it remaining undecayed after 18 hr is

A

12 g

B

16 g

C

4 g

D

8 g

Text Solution

Verified by Experts

The correct Answer is:
c
`N""_("left")=(N""_(0))/(2""_(n))=256/2""^(6)=4g(T=t""_(1//2)xxn)`
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