Question

Calculate the number of neutrons produced along with ${}_{54}^{139}Xe$ and ${}_{38}^{94}Sr$ from the absorption of a slow neutron by ${}_{92}^{235}U$.

Answer 1

${}_{92}^{235}U{+}_0^{1}n{⟶}_{54}^{139}Xe{+}_{38}^{94}Sr+3\left({}_0^{1}n\right)$

Hence, answer is 3.