What Does AT Stand For?
AT stands for Astatine
Astatine (AT) is a rare, naturally occurring halogen element with atomic number 85. It is highly radioactive and is the least stable of the halogens, with a half-life of the most stable isotope being only 8.1 hours. Astatine is primarily produced in trace amounts through the decay of heavier elements and has limited applications in scientific research and potential medical therapies, particularly in targeted alpha-particle therapy for cancer treatment. Due to its scarcity and radioactivity, astatine is not commercially available and is primarily of interest in nuclear chemistry and advanced materials research.
Added on 14th April 2008 | Last edited on 17th June 2025 | Edit Acronym