Which area of chemistry deals specifically with radioactivity and reactions involving radioactive materials?

Nuclear chemistry is the branch of chemistry that focuses specifically on the study of radioactivity and the chemical reactions involving radioactive materials. This area explores the properties and behavior of atomic nuclei, including the processes of nuclear decay, fission, and fusion. It involves understanding how unstable isotopes transform and the effects of radiation on matter.

In this field, scientists examine various phenomena such as the interactions of radiation with biological systems, the applications of radioactive isotopes in medicine and industry, and the principles of nuclear reactors and weapons. By emphasizing the nuclear processes and the behavior of isotopes, nuclear chemistry distinguishes itself from other branches, which do not primarily concern themselves with radioactivity.

Other branches like physical chemistry, inorganic chemistry, and organic chemistry have their own distinct focus areas—physical chemistry deals more with the physical properties and changes of matter, inorganic chemistry studies non-organic compounds, and organic chemistry is concerned with the structures, properties, and reactions of carbon-containing compounds. None of these branches center specifically on the study of radioactivity and nuclear reactions, making nuclear chemistry the unique area of focus for these topics.