Technetium-101 is a radioactive isotope of the element technetium, which has the atomic number 43. It is produced through the decay of molybdenum-100 and has a half-life of about 15.5 hours. Technetium-101 is primarily used in scientific research and has limited applications in medicine due to its short half-life. This isotope emits beta particles during its decay process, making it useful for studying nuclear reactions and properties of other isotopes. However, because of its radioactivity and relatively quick decay, it is not commonly found in everyday applications or commercial products.