Radiochemistry is a branch of chemistry that focuses on the study of radioactive materials and their chemical properties. It involves understanding how radioactive isotopes behave, how they interact with other substances, and how they can be used in various applications, such as medicine and energy production. In radiochemistry, scientists analyze the processes of radioactive decay and the formation of new elements. This field plays a crucial role in areas like nuclear medicine, where radioactive isotopes are used for diagnosis and treatment, and in nuclear power, where they help generate energy through controlled reactions.