noun🔗Share氟 The chemical element (symbol F) with an atomic number of 9. It is the lightest of the halogens, a pale yellow-green, highly reactive gas that attacks all metals."Because fluorine is so reactive, it is often used to create stronger compounds like those found in Teflon and some toothpastes. "由于氟的反应性极强，它常被用来制造更强的化合物，比如特氟龙和一些牙膏中的成分。elementchemistrysubstancesciencematerialChat with AIVocabulary GamePractice Reading
noun🔗Share氟原子 A single atom of this element."an octahedron of fluorines"一个氟原子构成的八面体elementchemistrysubstanceChat with AIVocabulary GamePractice Reading
