Tags: Chemical Compound, Chemical Substance.
Hydrogen astatide also known as astatine hydride astatane or astidohydrogen is a chemical compound with the chemical formula HAt consisting of an astatine atom covalently bonded to a hydrogen atom.This chemical compound exhibits properties very similar to the other four hydrogen halides and is in fact the strongest acid among them; however it is limited in use due to its ready decomposition into elemental hydrogen and astatine as well as the short half-life of the various isotopes of astatine.