41) On forming the nuclide from the protons, neutrons and electrons, the mass loss per nucleon for the is 0.00759 amu, whereas that for is 0.00944 amu. This means that: A) undergoes nuclear fission B) is more stable than C) thirteen nuclei could react to form one nucleus D) is more stable than E) weighs more than 42) Nuclear binding energy is: I)the energy liberated when forming a nucleus II)related to “lost” mass by the relationship 1 amu = 28.4 MeV III)related to “lost” mass by the relationship 1 amu = 931.5 MeV IV)the force which holds the 3 atomic particles together A) I and II B) I and III C) I, II, and IV D) I, III, and IV E) III and IV 43) The binding energy per nucleon is largest for ________. A) 3He B) 59Co C) 235U D) 98Tc E) 1H 44) In the reaction + → how much energy is produced per gram of carbon used? Masses, in unified atomic mass units are: = 12.00000, = 4.00260, = 15.99491. Express your answer in Joules/gram of carbon. A) 2.10 × 1019 J/g B) 5.76 × 1010 J/g C) 7.77 × 104 J/g D) 2.80 × 1011 J/g E) 3.36 × 1015 J/g 45) An isotope which has too high a neutron-proton ratio can gain stability by: A) beta emission B) K-capture C) proton emission D) gamma emission E) alpha emission 46) Which of the following is true concerning the nuclei of stable heavier elements? A) # = # B) # > # C) # < # D) # = # > #e- 47) Find the INCORRECT nuclear reaction. A) + → + + 3 B) + → + C) + → + D) + → + + E) + → 48) Choose the INCORRECT statement. A) The nuclear binding energy is the mass changed to energy that holds the nucleus together. B) Magic numbers are certain numbers of protons and/or neutrons which are especially stable. C) Even numbers of protons and neutrons are more stable. D) Particular ratios of neutrons to protons are more stable. E) All isotopes below Bi are stable. 49) Which of the following nuclides is most likely to be stable? A) 208Pb B) 209Bi C) 205Tl D) 24Na 50) The nuclear binding energy for cobalt-59 is the energy released when: A) 27 protons and 32 neutrons form cobalt-59 B) iron-56 and 2 protons form cobalt-59 C) 27 protons and 27 neutrons form cobalt-59 D) cobalt-58 and 1 neutron form cobalt -59