谁能介绍一下be元素

Be

　　元素符号:Be
　　中文名称:铍
　　英文名称:Beryllium
　　原子序数:4
　　原子量:9.012
　　外围电子排布:2s2
　　核外电子排布:2,2
　　常见化合价:+2
　　密度:1.848
　　溶点:1287
　　沸点:2472
　　所属周期:2
　　所属族数:IIA
　　原子半径:1.40
　　离子半径:0.45(+2)
　　共价半径:0.90
　　同位素及放射性:Be-9
　　发现人:Fredrich W鰄ler, A.A.Bussy
　　发现时间:1798
　　发现地点:德国/法国
　　名称由来:Greek: beryllos, "beryl" (a mineral).
　　元素描述:Hard, brittle, steel-gray metal. Lightest rigid metal. Formerly called glucinium (Gl) for its sweet but deadly taste.
　　元素来源:Found mostly in minerals like beryl [AlBe3(Si6O18)] and chrysoberyl (Al2BeO4). Pure beryllium is obtained by chemically reducing beryl mineral. Also by electrolysis of beryllium chloride.
　　元素用途:Its ability to absorb large amounts of heat makes it useful in spacecraft, missiles, aircraft, etc. Emeralds are beryl crystals with chromium traces giving them their green color.

　　元素符号： Be 英文名： Beryllium 中文名： 铍