Sm
元素符号:Sm
中文名称:钐
英文名称:Samarium
原子序数:62
原子量:150.4
外围电子排布:4f6 6s2
核外电子排布:2,8,18,24,8,2
常见化合价:+2,+3
密度:7.54
溶点:1074
沸点:1794
所属周期:6
所属族数:IIIB
原子半径:2.59
离子半径:1.08(+3)
共价半径:1.62
同位素及放射性:Sm-144 Sm-147(放 α) Sm-148(放 α) Sm-149(放 α) Sm-150 *Sm-152
发现人:Paul 蒻ile Lecoq de Boisbaudran
发现时间:1879
发现地点:法国
名称由来:Named after the mineral samarskite.
元素描述:Silvery rare earth metal.
元素来源:Found with other rare earths in monazite sand. The sand is often 50% rare earths by weight and 2.8% samarium.
元素用途:It is used in the electronics and ceramics industries. It is easily magnetized and very difficult to demagnetize. This suggests important future applications in solid-state and superconductor technologies.