Order Dating Using Radioactive Decay

Order Dating Using Radioactive Decay
16.24 Define the term half-life.
16.25 What percentage of a radioactive isotope remains
after 20.0 days if its half-life is 10.0 days?
16.26 The radioactive decay of Tl-206 to Pb-206 has a
half-life of 4.20 min. Starting with 5.00 × 1022
atoms of T1-206, calculate the number of such
atoms left after 42.0 min.
16.27 A radioactive isotope of copper decays as follows:
64Cu ⟶ 64Zn −1
0
β t1/2 = 12.8 h
Starting with 84.0 g of 64Cu, calculate the quantity
of 64Zn produced after 25.6 h.
SECTION 16.4: MEDICAL APPLICATIONS
OF RADIOACTIVITY
16.28 List three nuclei used in medicine and identify
their specific use.
16.29 Describe boron neutron capture therapy.
16.30 Define the term nuclear fission.
16.31 Which isotopes can undergo nuclear fission?
16.32 Define the terms nuclear fusion and thermonuclear
reaction.
16.33 Explain why heavy elements such as uranium
undergo fission, whereas light elements such as
hydrogen and lithium undergo fusion.
Order Dating Using Radioactive Decay
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