Br
元素符号:Br
中文名称:溴
英文名称:Bromine
原子序数:35
原子量:79.90
外围电子排布:4s2 4p5
核外电子排布:2,8,18,7
常见化合价:-1,+1,+3,+5,+7
密度:3.119
溶点:-7.2
沸点:58.78
所属周期:4
所属族数:VIIA
原子半径:1.12
离子半径:1.98(-1)
共价半径:1.14
同位素及放射性:*Br-79 Br-81
发现人:Antoine J. Balard
发现时间:1826
发现地点:法国
名称由来:Greek: br鬽os (stench).
元素描述:Redish-brown liquid.
元素来源:Occurs in compounds in sea water.
元素用途:It was once used in large quantities to make a compound that removed lead compound build up in engines burning leaded gasoline. Now it is primarily used in dyes, disinfectants, and photographic chemicals.