The number of neutrons accompanying the formation of `._(54)Xe^(139)` and `._(38)Sr^(94)` from the absorption of a slow neutron by `._(92)U^(235)`, followed by nuclear fission is

The number of neutrons accompanying the formation of ""_(54)^(139)Xe and ""_(38)^(94)"Sr" from the absorption of a slow neutron by ""_(92)^(235) U, followed by nuclear fission is :

The number of neutrons accompanying the formation of ""_(54)""^(139)Xe and ""_(38)""^(94)Sr from th absorption of slow neutron by ""_(92)""^(235)U , followed by nuclear fission is

The number of neutrons in ""_(92)U^(235) is