Radioactivity and Radioactive Decay Quick Check

Question

1. Which of the following transformations is an example of a β−
-decay?
31/14Si becomes 31/15 P because a neutron is converted to a proton.

2. The unstable uranium nuclide(I don't feel like typing the whole thing)
238/92U because the very long half-life means a very small rate of decay

3. The beta minus decay process 13/7N→13/6C+β−+ν¯¯¯ is proposed in which nitrogen’s proton becomes a neutron. The process is not possible because:
charge conservation is not satisfied

4. The fact that the relative abundance is greater for elements in which the total number of protons and neutrons is a multiple of two is because __________.

of the four nuclear decay processes only the α
-decay changes the baryon number and does so in increments of four

Answer 1

5. True or False: Radioactive decay always results in the formation of a stable nucleus.

False. Radioactive decay can result in the formation of a stable nucleus, but it can also lead to the formation of another unstable nucleus, which can then decay further.

Answer 2

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