The Point of Maximum Stability in the Binding Energy Curve ${ }_{2}^{4} \mathrm{He}$

Multiple Choice

The point of maximum stability in the binding energy curve occurs in the vicinity of which one of the following isotopes?

A) ${ }_{2}^{4} \mathrm{He}$
B) ${ }_{26}^{56} \mathrm{Fe}$
C) ${ }_{5}^{11} \mathrm{B}$
D) ${ }_{83}^{209} \mathrm{Bi}$
E) ${ }_{91}^{231} \mathrm{Pa}$