Q12 of 94 Page 440

If three helium nuclei combine to form a carbon nucleus, energy is liberated. Why can’t helium nuclei combine on their own and minimize the energy?

-Since the initial separation between helium nuclei are large (in terms of Å), thus nuclear reaction cannot start on their own.


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10

Does a nucleus loss mass when it suffers gamma decay?

 11

Typically, in a fission reaction, the nucleus split into two middle-weight nuclei of unequal masses. Which of the two (heavier or lighter) has greater kinetic energy? Which one has greater linear momentum?

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The mass of a neutral carbon atom in ground state is:

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The mass number of a nucleus is equal to