Curium is a chemical element with the symbol Cm and atomic number 96. It is a radioactive actinide metal that was first synthesized in 1944 and named after Marie Curie and her husband Pierre Curie. Curium is used in various applications, including as a source of neutrons in scientific research and in certain types of nuclear reactors. It typically occurs in metallic form and has a silvery appearance. Due to its radioactivity, curium must be handled with caution.