Tb
元素符号:Tb
中文名称:铽
英文名称:Terbium
原子序数:65
原子量:158.9
外围电子排布:4f9 6s2
核外电子排布:2,8,18,27,8,2
常见化合价:+3,+4
密度:8.27
溶点:1356
沸点:3230
所属周期:6
所属族数:IIIB
原子半径:2.51
离子半径:1.18(+3)
共价半径:1.59
同位素及放射性:Tb-159
发现人:Carl Mosander
发现时间:1843
发现地点:瑞典
名称由来:Named after Ytterby, a village in 瑞典.
元素描述:Soft, ductile, silvery-gray, rare earth metal.
元素来源:Found with other rare earths in monazite sand, which typically contain 0.03% terbium. Other sources are xenotime and euxenite, both of which are oxide mixtures that can contain up to 1% terbium.
元素用途:It is used in modest amounts in special lasers and solid-state devices.