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beryllium 音标拼音: [bɚ'ɪliəm] n. 金皮 金皮 beryllium n 1: a light strong brittle grey toxic bivalent metallic element [synonym: {beryllium}, {Be}, {glucinium}, {atomic number 4}] Glucinum \Glu*ci"num\, n. [Cf. F. glucinium, glycium, fr. Gr. ?, sweet. Cf. {Glycerin}.] (Chem.) A rare metallic element, of a silver white color, and low specific gravity (2.1), resembling magnesium. It never occurs naturally in the free state, but is always combined, usually with silica or alumina, or both; as in the minerals phenacite, chrysoberyl, beryl or emerald, euclase, and danalite. It was named from its oxide glucina, which was known long before the element was isolated. Symbol Gl. Atomic weight 9.1. Called also {beryllium}. [Formerly written also {glucinium}.] [1913 Webster] Beryllium \Be*ryl"li*um\, n. [NL.] (Chem.) A metallic element found in the beryl. See {Glucinum}. [1913 Webster] beryllium
Symbol: Be Atomic number: 4 Atomic weight: 9.0122 Grey metallic element of group 2 of the periodic table. Is toxic and can cause severe lung diseases and dermatitis. Shows high covalent character. It was isolated independently by F. Wohler and A.A. Bussy in 1828.
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