Textbook Compulsory (3-5) Chapter 3, Sections 1, 2 "The Composition and Nuclear Force of Atomic Nucleus" ppt 1. Know what is natural radiation phenomenon. 2. Know the nature and distinguishing methods of the three rays. 3. Know the composition of the nucleus, know what isotopes. 4. It is known that the nuclear force only exists between adjacent nuclei, and the nuclear force is different from the Coulomb force. 5. Understand the writing of half-life and decay equation.
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