A radioactive isotope has a half-life of 8 days. What fraction of the atoms will remain after 72 days?
a
9.766 × 10-4
b
1.736 ×10-3
c
1.953 ×10-3
d
3.472 × 10-3
e
3.906 x 10-3
Explanation
Correct Option
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AceA001
1 year ago
The fraction that will decay is 1/256 = 3.906x10³
While the fraction that remains is 1- 3.906x10³ = 0.996
