In a fission process in which $235$U$235$U is struck by a neutron and undergoes fission to produce $144$Ba$144$Ba$,89$Kr$89$Kr$,$ and three neutrons. The measured masses of these isotopes are $235\mathrm{.}043930$ uu $(235$U$235$U$),143\mathrm{.}922953$ uu $(144$Ba$144$Ba$),88\mathrm{.}917631$ uu $(89$Kr$89$Kr$),$ and $1\mathrm{.}0086649$ uu $($neutron$).$