Question

The half life of ^215At is 100us. The time taken for the radioactivity of a sample of ^215At to decay to 1/16th of its initial value is​

Answer 1

Let the amount of substance at the start be n

n----n/2---n/4--n/8--n/16

Total no of t1/2=4t1/2=4×100yrs=400

I hope this helps ( ╹▽╹ )

Answer 2

Answer:

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Explanation:

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