Technetium-98 is a radioactive isotope of the element Technetium, which has the atomic number 43. It is produced through the decay of Molybdenum-98 and has a half-life of about 4.2 million years. Technetium-98 is not found in significant amounts in nature and is primarily used in scientific research. Due to its long half-life, Technetium-98 can be utilized in various applications, including studies in nuclear physics and radiochemistry. Its properties make it a subject of interest for understanding the behavior of heavy elements and their isotopes in different environments.