22
Ti
4
週期
4
d
個質子
電子
個中子
22
22
26
一般屬性
原子序數
22
標準原子質量
47.867
品質編號
48
類別
過渡金屬
顏色
銀色
放射性
From the Latin titans, the first sons of the Earth, Greek mythology
晶體結構
簡單六角形
歷史
William Gregor found the oxide of titanium in ilmenite in 1791.

Martin Heinrich Klaproth independently discovered the element in rutile in 1795 and named it.

The pure metallic form was only obtained in 1910 by Matthew A. Hunter.

In 1936, the Kroll Process made the commercial production of titanium possible.
每個外殼的電子
2, 8, 10, 2
電子排布
[Ar] 3d2 4s2
Ti
Titanium is one of the few elements that burns in pure nitrogen gas
物理性質
物態
固體
密度
4.54 g/cm3
熔點
1941.15 K | 1668 °C | 3034.4 °F
沸點
3560.15 K | 3287 °C | 5948.6 °F
熔化熱
18.7 kJ/mol
汽化熱
425 kJ/mol
比熱容
0.523 J/g·K
地殼豐度
0.66%
宇宙豐度
0.0003%
A
圖片來源: Wikimedia Commons (Alchemist-hp)
A titanium crystal bar made by the iodide process at URALREDMET in the Soviet era
CAS 編號
7440-32-6
Pubchem CID 編號
23963
原子性質
原子半徑
147 pm
共價半徑
160 pm
電負性
1.54 (鲍林标度)
電離電位
6.8281 eV
原子體積
10.64 cm3/mol
熱導率
0.219 W/cm·K
氧化態
-1, 2, 3, 4
應用
Titanium is used in steel as an alloying element to reduce grain size and as a deoxidizer, and in stainless steel to reduce carbon content.

Titanium has potential use in desalination plants for converting sea water into fresh water.

Titanium is used in several everyday products such as drill bits, bicycles, golf clubs, watches and laptop computers.
Titanium metal is considered to be non-toxic
同位素
穩定同位素
46Ti, 47Ti, 48Ti, 49Ti, 50Ti
不穩定同位素
38Ti, 39Ti, 40Ti, 41Ti, 42Ti, 43Ti, 44Ti, 45Ti, 51Ti, 52Ti, 53Ti, 54Ti, 55Ti, 56Ti, 57Ti, 58Ti, 59Ti, 60Ti, 61Ti, 62Ti, 63Ti