Aluminium-26

Aluminium-26 (often written as \(^{26}\text{Al}\)) is a radioactive isotope of aluminium. It has a nucleon count of 26, consisting of 13 protons and 13 neutrons. \(^{26}\text{Al}\) is notable for its half-life of about 717,000 years, which allows it to be used in various scientific studies.