Titanium, 22 Ti Titanium Pronunciation Appearance silvery grey-white metallic Standard atomic weight A r, std (Ti) 47.867(1)[2] Titanium in the periodic table
Atomic number (Z ) 22 Group group 4 Period period 4 Block d-block Element category d-block Electron configuration [Ar ] 3d2 4s2 Electrons per shell 2, 8, 10, 2 Physical properties Phase at STP solid Melting point 1941 K (1668 °C, 3034 °F) Boiling point 3560 K (3287 °C, 5949 °F) Density (near r.t. ) 4.506 g/cm3 when liquid (at m.p. ) 4.11 g/cm3 Heat of fusion 14.15 kJ/mol Heat of vaporization 425 kJ/mol Molar heat capacity 25.060 J/(mol·K) Vapor pressure
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
1982
2171
(2403)
2692
3064
3558
Atomic properties Oxidation states −2, −1, 0,[3] +1, +2 , +3 , +4 [4] (an amphoteric oxide) Electronegativity Pauling scale: 1.54 Ionization energies 1st: 658.8 kJ/mol 2nd: 1309.8 kJ/mol 3rd: 2652.5 kJ/mol (more ) Atomic radius empirical: 147 pm Covalent radius 160±8 pm Spectral lines of titaniumOther properties Natural occurrence primordial Crystal structure hexagonal close-packed (hcp) Speed of sound thin rod 5090 m/s (at r.t. ) Thermal expansion 8.6 µm/(m·K) (at 25 °C) Thermal conductivity 21.9 W/(m·K) Electrical resistivity 420 nΩ·m (at 20 °C) Magnetic ordering paramagnetic Magnetic susceptibility +153.0·10−6 cm3 /mol (293 K)[5] Young's modulus 116 GPa Shear modulus 44 GPa Bulk modulus 110 GPa Poisson ratio 0.32 Mohs hardness 6.0 Vickers hardness 830–3420 MPa Brinell hardness 716–2770 MPa CAS Number 7440-32-6 History Discovery William Gregor (1791) First isolation Jöns Jakob Berzelius (1825) Named by Martin Heinrich Klaproth (1795) Main isotopes of titanium
Category: Titanium view · talk · edit
| references
Ti
data m.p. cat
C
1668
—
—
K
1941
1941
0
F
3034
3034
0
max precision
0
WD
input
C: 1668, K: 1941, F: 3034
comment
Ti
data b.p. cat
C
3287
—
—
K
3560
3560
0
F
5949
5949
0
max precision
0
WD
input
C: 3287, K: 3560, F: 5949
comment
References
These references will appear in the article, but this list appears only on this page.
↑ "titanium" . Oxford Dictionaries . Oxford University Press . https://en.oxforddictionaries.com/definition/titanium .
↑ Meija, Juris; Coplen, Tyler B.; Berglund, Michael; Brand, Willi A.; De Bièvre, Paul; Gröning, Manfred; Holden, Norman E.; Irrgeher, Johanna et al . (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry 88 (3): 265–91. doi :10.1515/pac-2015-0305 .
↑ Jilek, Robert E.; Tripepi, Giovanna; Urnezius, Eugenijus; Brennessel, William W.; Young, Victor G., Jr.; Ellis, John E. (2007). "Zerovalent titanium–sulfur complexes. Novel dithiocarbamato derivatives of Ti(CO)6 : [Ti(CO)4 (S2 CNR2 )]− ". Chem. Commun. (25): 2639–2641. doi :10.1039/B700808B . PMID 17579764 .
↑ Andersson, N. (2003). "Emission spectra of TiH and TiD near 938 nm" . J. Chem. Phys. 118 (8): 10543. doi :10.1063/1.1539848 . Bibcode : 2003JChPh.118.3543A . http://bernath.uwaterloo.ca/media/257.pdf .
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics . Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4 .
Template:Documentation