30-2Chapter 3030.4.Set Up:has 7 protons, 7 neutrons and 7 electrons in the neutral atom. Table 30.2 gives the atomic mass tobe 1 u is equivalent to 931.5 MeV. The mass defect is Solve: (a)(b)(c)30.5.Set Up:The constituents of the neutral atom are one atom and one neutron. Table 30.2 gives theatomic mass to be The constituents of the neutral atom are two atoms and twoneutrons. 1 u is equivalent to 931.5 MeV. The mass defect is Solve: (a)(b)(c)The binding energy per nucleon is much larger for than for Reflect:The masses in Table 30.2 are atomic masses and include the masses of the electrons that are present in theneutral atom. It is important to correctly account for the electron masses in the calculation.30.6.Set Up:has 28 electrons and 56 nucleons, 28 protons and 28 neutrons. has 82 electrons and207 nucleons, 82 protons and 125 neutrons. and 1 u isequivalent to 931.5 MeV.Solve: (a)and the binding energy is 492.3 MeVand the binding energy is 1629 MeV(b)binding energy per nucleon is binding energy per nucleon is (c)The binding energy is the energy needed to take the nucleus completely apart.
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