Solveeit Logo

Question

Question: The half-life of \(215 ⥂ At\) is\(100\mu s\). The time taken for the radioactivity of a sample of \(...

The half-life of 215At215 ⥂ At is100μs100\mu s. The time taken for the radioactivity of a sample of 215At215 ⥂ At to decay to 1/16th of its initial value is.

A

400μs400\mu s

B

6.3μs6.3\mu s

C

40μs40\mu s

D

300μs300\mu s

Answer

400μs400\mu s

Explanation

Solution

The radioactivity of a sample decays to 116th\frac{1}{16}thof its initial value in four half lives.