1. Define radioactivity.
2. How are chemical and nuclear reactions different from one another?
3. Why do nuclei spontaneously decay?
4. What is the belt of stability?
5. An element has 50 protons and 90 neutrons. Will the nucleus breakdown? Why or why not?
6. Will a nucleus of Zn-65 be stable or unstable? Explain.
7. What are the products of radioactive decay?
8. List elements that are always radioactive.n

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1Radioactivity Radioactivity property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously It is in essence an attribute of individual atomic nuclei An unstabl... View the full answer