摘要
The interplay of the fundamental forces(here mainly the strong force and electromagnetic force)holds nucleons together to form atomic nuclei.However,in nature onlyless than ten percent of the total number of nuclei
The interplay of the fundamental forces （here mainly the strong force and electromagnetic force） holds nucleons together to form atomic nuclei. However, in nature only less than ten percent of the total number of nuclei is stable. The majority of nuclei are unstable; that is, after having lived for a certain time, they change into the daughter nuclei by radioactive decay.
