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8 grams of a radioactive substance is re...

8 grams of a radioactive substance is reduced to 0.5 g after 1 hour . The `t_(1//2)` of the radioactive substance is

A

15 min

B

30 min

C

45 min

D

10 min

Text Solution

Verified by Experts

The correct Answer is:
A
`N_(0) = 8g, N = 0.5 g and t = 1 hr. = 60` min. Find `t_(1//2)` by
`t = (2.303 xx t_(1//2))/(0.693) "log" (N_(0))/(N)`
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