Question

The number of neutrons emitted when ${}_{92}^{235}\text{U}$ undergoes controlled nuclear fission to ${}_{54}^{142}\text{Xe}$ and ${}_{38}^{90}\text{Sr}$.

Answer 1

The number of neutrons emitted when ${}_{92}^{235}\text{U}$ undergoes controlled nuclear fission to ${}_{54}^{142}\text{Xe}$ and ${}_{38}^{90}\text{Sr}$ is 4.
${}_{92}^{235}\text{U}{+}_0^{1}n{\to }_{54}^{142}\text{Xe}{+}_{38}^{90}\text{Sr}+4_0^{1}n+energy$