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Titanium (Ti)

From Wikipedia, the free encyclopediaTitanium is a chemical element with symbol Ti and atomic number 22. It is a lustrous transition metal with a silver color, low density and high strength. It is highly resistant to corrosion in sea water, aqua regia and chlorine.

Titanium in the periodic table

SymbolTi
Atomic number22
Group4
Period4
Blockd
Element categoryTransition Metal

Physical properties

Phase at STPSolid
Density4.506 g/cm3
Atomic weight47.8671 u
Melting point1941 K
1667.85 °C
3034.13 °F
Boiling point3560 K
3286.85 °C
5948.33 °F

Atomic properties

Electronegativity (Pauling Scale)1.54
Electron affinity7.289 kJ/mol
Oxidation states−2, −1, 0, +1, +2, +3, +4
(an amphoteric oxide)
Ionization energies
1658.8 kJ/mol
2 1309.8 kJ/mol
3 2652.5 kJ/mol
4 4174.6 kJ/mol
5 9581 kJ/mol
6 11533 kJ/mol
7 13590 kJ/mol
8 16440 kJ/mol
9 18530 kJ/mol
10 20833 kJ/mol
11 25575 kJ/mol
12 28125 kJ/mol
13 76015 kJ/mol
14 83280 kJ/mol
15 90880 kJ/mol
16 100700 kJ/mol
17 109100 kJ/mol
18 117800 kJ/mol
19 129900 kJ/mol
20 137530 kJ/mol
21 602930 kJ/mol
22 639294 kJ/mol

Electron configuration

Elektronkonfiguration (shorthand)[Ar] 3d2 4s2
Electron configuration1s2 2s2 2p6 3s2 3p6 3d2 4s2
Electrons per shell2, 8, 10, 2

History

Discovered1791
Discovered byWilliam Gregor
Named byMartin Heinrich Klaproth
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