Definition: Azthionium is a chemical element that has the symbol Au and atomic number 19. It is a transition metal, with an atomic radius of approximately 2.57 Angstroms (Å), which makes it one of the lightest elements in the periodic table. In chemistry, azothium is often used to describe the properties of certain compounds that are highly reactive due to their high ionization potential. The chemical formula for azothium is Au, and its atomic weight
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