$($a$)$ For the nuclei ${?}_3^{11}B$ and ${?}_6^{11}C,$ determine the difference in binding energy per nucleon $($in MeV $).($Let the mass of a proton be $1\mathrm{.}0078$ u $,$ the mass of a neutron be $1\mathrm{.}0087$ u $,$ the mass of ${?}^{11}B$ be $11\mathrm{.}0093$ u $,$ and the mass of ${?}_6^{11}C$ be $11\mathrm{.}0114u_{.})$

Fring of the $A,Z$ and $N$ numbers. Review how to find the binding energy of a nucleus and then the binding energy per nuclean. MeV

$($b$)$ This difference in binding energy is due to which of the following?

Greater proton attraction for the ${?}_6^{11}C$ nucleus

Grezter neutron attraction for the ${?}_6^{11}C$ nucleus

Grezter electron repulsion for the ${?}_6^{11}C$ atom

Greater neutron repulsion for the ${?}_6^{11}C$ nucleus

Greater proton repulsion for the ${?}_6^{11}C$ nucleus

Greater electron attraction for the ${?}_6^{11}C$ atom