The half life of the isotope is 60 minutes.
The term half life refers to the time taken for an isotope to decay to half of its original amount. In order to find the half life of the isotope, we can use the formula;
N/No =(1/2)^t/t1/2
Where;
N = mass of the isotope at time t
t = time taken
t1/2 = half life of the isotope
No = mass of the isotope originally present
Hence;
17/32 = (1/2)^60/t1/2
(0.5)^1 = (0.5)^60/t1/2
1 = 60/t1/2
t1/2 = 60 minutes
The half life of the isotope is 60 minutes.
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