The characteristic of nuclear fission is that it involves the splitting of an atom into two or more fragments. Details about nuclear fission can be found below.
What is nuclear fission?
Nuclear fission in radioactivity is a process by which the nucleus of a large atom splits into two or more smaller atoms.
Nuclear fission is usually accompanied by the release of a radioactive particle.
This suggests that the characteristic of nuclear fission is that it involves the splitting of an atom into two or more fragments.
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