To determine the energy required to remove a neutron from C13, we need to find the difference in total binding energy between C13 and C12. The binding energy per nucleon for C13 is given as 7.47 MeV . Since C13 has 13 nucleons, its total binding energy is: ‌EB,C13=7.47‌MeV×13 ‌EB,C13=97.11‌MeV The binding energy per nucleon for C12 is given as 7.68 MeV . Since C12 has 12 nucleons, its total binding energy is: ‌EB,C12=7.68‌MeV×12 ‌EB,C12=92.16‌MeV The energy required to remove a neutron from C13 is the difference between the total binding energy of C13 and C12 : E‌remove ‌‌=EB,C13−EB,C12 E‌remove ‌‌=97.11‌MeV−92.16‌MeV E‌remove ‌‌=4.95‌MeV Now, let's convert this energy from MeV to Joules. Since 1 MeV is equivalent to 1.60218×10−13J: ‌E‌remove ‌=4.95‌MeV×1.60218×10−13J∕MeV ‌E‌remove ‌=7.92×10−13J Therefore, the energy required to remove a neutron from C13 is 7.92×10−13J. The correct option is: Option C: 7.92×10−13J