Question

uranium atom splits into simpler atoms when its nucleus is hit by dash moving neutrons ​

Answer 1

Answer:

When a free neutron hits the nucleus of a fissile atom like uranium-235 (235U), the uranium splits into two smaller atoms called fission fragments, plus more neutrons. Fission can be self-sustaining because it produces more neutrons with the speed required to cause new fissions. This creates the chain reaction.