Question

which material is responsible for initiating and continuing the chain reaction? uranium - 235, ce{^{235}_{92}u} neutron, ce{^{1}_{0}n} barium - 144, ce{^{144}_{56}ba} krypton - 90, ce{^{90}_{36}kr}

Explanation:

The provided diagram shows a nuclear fission chain reaction. A neutron initiates the fission of Uranium-235, and the fission reaction releases more neutrons. These released neutrons then go on to split other Uranium-235 atoms, sustaining and continuing the chain reaction.

Answer:

neutron, $^1_0n$