The half-life of &15&3N is 6.5 s. A sample of this nuclide of hydroge – McqOptions

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1.	The half-life of &15&3N is 6.5 s. A sample of this nuclide of hydrogen is observed for 32.5 s. The fraction of the original radioactive isotope remaining after this time is
A.	1 ⁄ 32
B.	1 ⁄ 16
C.	1 ⁄ 8
D.	1 ⁄ 4
Answer» B. 1 ⁄ 16

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