The process in which a large nucleus splits into two or more parts is called nuclear fission. To find the answer to this question, you can search for information related to nuclear processes or nuclear physics. One reliable source of information is textbooks or scientific articles on nuclear physics. Another option is to search online using search engines like Google or Bing. By typing in the question or keywords related to the topic, you can find reputable sources that explain nuclear fission and its characteristics.
