Periodic Table Vocabulary
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. (Hint: the 65 represents the mass number of zinc) 7. What are the products of radioactive decay? 8. List elements which are always radioactive. 9. What is a radioisotope? 10. Define natural ... ................
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