Question

Which feature of nuclear fission reactions allows these reactions to take place in a chain reaction?

Answer 1

 the cycle will continue until to fuel is present. that is why chain reaction occurs in a fission reaction

Answer 2

Hello!

The nuclear fission chain occurs because the reaction will produce neutrons, then the neutrons will farther react to other fuels that will lead to the formation of more neutrons. The cycle will continue until the fuel is present.

I really hope this helped you! c: