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A certain nuclide has a half-life period...

A certain nuclide has a half-life period of 30 minutes. If a sample containing 600 atoms is allowed to decay for 90 minutes, how many atoms will remain.

A

200 atoms

B

450 atoms

C

75 atoms

D

500 atoms

Text Solution

Verified by Experts

The correct Answer is:
C
`n = (90)/(30) = 3 rArr N = (600)/(2^(3)) = 75` atoms
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