A nucleus absorbs a neutron to form an excited compound nucleus that immediately…

PHYSICS · Subjective · CBSE · Physics · Nuclei · Nuclei

Problem

^{235}\mathrm U

nucleus absorbs a neutron to form an excited compound nucleus that immediately splits into

^{141}\mathrm{Ba}

^{92}\mathrm{Kr}

and three neutrons. The atomic masses are:

^{235}\mathrm U = 235.043929\,\text u

, neutron

= 1.008665\,\text u

^{141}\mathrm{Ba} = 140.914411\,\text u

^{92}\mathrm{Kr} = 91.926156\,\text u

. (i) Calculate the mass defect of this reaction in atomic mass units. (ii) Hence find the energy released in MeV. (Take

1\,\text u = 931.5\,\text{MeV}/c^{2}