Radioactive lead .(82)Pb^(201) has a hal...

Radioactive lead `._(82)Pb^(201)` has a half-life of 8 hours. Starting from one milligram of this isotope, how much will remain after 24 hours

A

1/2 mg

B

1/3 mg

C

1/8 mg

D

1/4 mg

Verified by Experts

The correct Answer is:

C

`n = 24/8 = 3 , N = (N_0)/(2^n) = 1/(2^3) = 1/8 ` mg

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