| 单词 | bromine |
| 释义 | Word Frequency bromine(ˈbrəʊmiːn, -mɪn) noun a pungent dark red volatile liquid element of the halogen series that occurs in natural brine and is used in the production of chemicals, esp ethylene dibromide. Symbol: Br; atomic no: 35; atomic wt: 79.904; valency: 1, 3, 5, or 7; relative density 3.12; density (gas): 7.59 kg/m3; melting pt: –7.2°C; boiling pt: 58.78°C Word origin C19: from French brome bromine, from Greek brōmos bad smell + -ine2, of uncertain origin |
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