👉 Halitherium is a rare radioactive element with an atomic number of 12 and a mass number of 85. It has been found in rocks, minerals, and other materials that are relatively old and have experienced significant decay over time. Halitherium was first discovered in the late 19th century and has since become one of the most studied radioactive elements due to its unique properties and potential applications in various fields such as medicine, nuclear power, and environmental science.
