Fill in the Blank QuestionFill in the blank question.Splitting a nucleus into two smaller nuclei is called nuclear .

The process of splitting a nucleus into two smaller nuclei is called nuclear fission.

Explanation:

Nuclear fission occurs when a nucleus, typically of a heavy element such as uranium-235 or plutonium-239, absorbs a neutron and becomes unstable. This instability leads the nucleus to split into two smaller nuclei, along with the release of a significant amount of energy, as well as additional neutrons. These released neutrons can then go on to induce further fission reactions, creating a chain reaction. This principle is harnessed in nuclear reactors for energy production and in atomic bombs for explosive power. Thus, understanding nuclear fission is crucial for both energy generation and the study of nuclear physics.