A nucleus with atomic number Z and mass number A undergoes alpha decay. Which of the following is true? 1.Z increases by 2 and A decreases by 4 2.7 decreases by 2 and A decreases by 2 3.Z increases by 1 and A do not change 4.2 decreases by 2 and A decreases
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52.z
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α-particle by it. So, The atomic number and mass number, respectively, of the daughter nucleus are Z - 2, A - 4. Isotope: Isotopes of a given element have the same number of protons but different numbers of neutrons in each atom.
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