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Sharp Master
8,093 Answers
- Posted on Jul 26, 2014
Re: What if 50mg of actinium-226 disintegrates over a...
The half life of Actinium 226 is about 1.2 days (Check with the source of the question). Let the half life be T_1/2.
The equation of the radioactive decay is
N(t)=N_0*exp(-ln2*t/T_1/2)
For the mass
m(t)=m_0*exp(-(ln2)*t/T_1/2)
There remains 6.16 mg after 87 hours.
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