Introduction to radioactive elements
Radioactive elements (to be precise, radionuclides) are particles or rays (such as alpha rays, beta rays, gamma rays, etc.) that can spontaneously release from the unstable atomic nucleus, release energy at the same time, and eventually decay to form stable elements And stop emitting elements. This property is called radioactivity, and this process is called radioactive decay. Minerals containing radioactive elements (such as U, Th, Ra, etc.) are called radioactive minerals.