Write the nuclear reaction for the neutron-induced fission of U-235 to form Xe-144 and Sr-90. How many neutrons are produced in the reaction?
Here, we are going to calculate the number of neutrons produced in the nuclear fission reaction.
The collision of a neutron with a large atom, such as uranium-235 to form a much less stable nuclide that spontaneously decomposes into two medium sized atoms and 2 or more neutrons is called nuclear fission.
In a nuclear reaction, the sum of the superscripts (mass numbers, A) for the reactants must be equal to the sum of the superscripts for the products. Similarly, the sum of the subscripts (atomic numbers, Z) for the reactants must be equal to the sum of the subscripts for the products.
The nuclear fission reaction of U-235 to form Xe-144 and Sr-90 is:
n + U → U → Xe + Sr + 2n
Thus, 2 neutrons are produced in the reaction.