Ti
元素符号:Ti
中文名称:钛
英文名称:Titanium
原子序数:22
原子量:47.87
外围电子排布:3d2 4s2
核外电子排布:2,8,10,2
常见化合价:+2,+3,+4
密度:4.5
溶点:1668
沸点:3287
所属周期:4
所属族数:IVB
原子半径:2.00
离子半径:0.61(+3)
共价半径:1.32
同位素及放射性:Ti-46 T-47 *Ti-48 Ti-49 Ti-50
发现人:William Gregor
发现时间:1791
发现地点:英格兰
名称由来:Greek: titanos (Titans).
元素描述:Shiny, dark-gray metal. Ninth most abundant element in the earth's crust (5700 ppm). It can be highly polished, and is relatively immune to tarnishing.
元素来源:Usually occurs in the minerals ilmenite (FeTiO3) or rutile (TiO2). Also in Titaniferous magnetite, titanite (CaTiSiO5), and iron ores. Pure metal produced by heating TiO2 with C and Cl2 to produce TiCl4 then heated with Mg gas in Ar atmosphere.
元素用途:Since it is strong and resists acids it is used in many alloys. Titanium dioxide (TiO2), a white pigment that covers surfaces very well, is used in paint, rubber, paper and many others.