Ta
元素符号:Ta
中文名称:钽
英文名称:Tantalum
原子序数:73
原子量:180.9
外围电子排布:5d3 6s2
核外电子排布:2,8,18,32,11,2
常见化合价:+3,+5
密度:16.6
溶点:2996
沸点:5425
所属周期:6
所属族数:VB
原子半径:2.09
离子半径:0.64(+5)
共价半径:1.34
同位素及放射性:Ta-180 *Ta-181
发现人:Anders Ekeberg
发现时间:1802
发现地点:瑞典
名称由来:From king Tantalus of Greek mythology, father of Niobe.
元素描述:Rare, gray, heavy, hard but ductile, metal with a high melting point.
元素来源:Chiefly occurs in the mineral tantalite. Always found with niobium.
元素用途:Often used as an economical substitute for platinum. Tantalum pentoxide is used in capacitors and in camera lenses to increase refracting power. It and its alloys are corrosion and wear resistant so it is used to make surgical and dental tools.