What is the principle behind nuclear fission?

What is the principle behind nuclear fission?

Step 1: Understand that a nucleus is the center of an atom, made up of protons and neutrons.
Step 2: Recognize that some nuclei are heavy, meaning they have a lot of protons and neutrons.
Step 3: Learn that nuclear fission happens when a heavy nucleus absorbs a neutron.
Step 4: Realize that after absorbing the neutron, the heavy nucleus becomes unstable.
Step 5: Understand that this instability causes the nucleus to split into two or more smaller nuclei.
Step 6: Note that when the nucleus splits, it releases a large amount of energy.
Step 7: Remember that this process can also release more neutrons, which can cause further fission in nearby nuclei.

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