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Which best describes nuclear fission? A nucleus spontaneously splits and absorbs energy. Two nuclei spontaneously combine and absorb energy. A nucleus collides with a neutron and splits, releasing energy. Nuclei combine to form a heavier nucleus, releasing energy.

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Answer:

A nucleus collides with a neutron and splits, releasing energy.

Explanation:

Lanuel

The answer option which best describes nuclear fission is: C. A nucleus collides with a neutron and splits, releasing energy.

A nuclear reaction can be defined as a type of reaction in which the nucleus of an atom is transformed by either being joined (fusion) or split (fission) with the nucleus of another atom of a radioactive element and accompanied by a release of energy.

Generally, there are two (2) main types of nuclear reaction and these are:

  • Nuclear fusion: it involves the joining of two smaller nuclei of atoms to form a single massive or heavier nucleus with the release of energy.
  • Nuclear fission: it involves the collision of a heavy atomic nucleus with a neutron, thereby causing a split and release of energy.

In conclusion, a nuclear fission causes a split of a heavy atomic nucleus into two or more nuclei (fragments) having approximately equal mass.

Read more: https://brainly.com/question/24040465

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