About
砹 is a modern phono-semantic coinage created to represent the chemical element astatine in Chinese. Its structure combines the semantic radical 石 (stone) on the left, which denotes solid, non-metallic elements, with the phonetic component 艾 (ài) on the right to indicate the pronunciation. Lacking any historical usage or classical meanings, the character functions purely as a specialized transliteration within modern chemical nomenclature.