In the fission of uranium-235,which particle causes and propagates the chain reaction?

Question

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In the fission of uranium-235, it is the neutron that causes and propagates the chain reaction. When a neutron collides with a uranium-235 nucleus, it can cause the nucleus to split into two smaller nuclei, releasing more neutrons in the process. These neutrons can then collide with other uranium-235 nuclei, creating a chain reaction. Alpha particles, beta particles, and electrons are not involved in this process.

In the Fission of Uranium-235,which Particle Causes and Propagates the Chain