The reaction 11B( (alpha sign) ,n)14N is found to be exothermic, producing 0.157 MeV.

/in /by

The reaction 11B(α (alpha sign) ,n)14N is found to be exothermic, producing 0.157
MeV. Based on this information, calculate the atomic weight in atomic mass units (u) of
a neutron to six decimal places. (Assume that the atomic weight of an alpha-particle is
equal to that of a neutral 4He2 atom.)