A pale yellow, gaseous chemical element of the halogen series, atomic no. 9. Symbol F.
| 单词 | θ69104 |
| 释义 | the world > matter > chemistry > elements and compounds > metals > specific elements > fluorine > [noun] (4) fluorine1813 A pale yellow, gaseous chemical element of the halogen series, atomic no. 9. Symbol F. phthore1858 Fluorine. Cf. phthorine, n. phthorine1858 Fluorine. Subcategories:— compounds (1) |
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