Titanium, 22Ti |
| Titanium |
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| Pronunciation | |
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| Appearance | sillery gray-white metallic |
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| Standard atomic weight Ar, std(Ti) | 7001478670000000000♠47.867(1)[2] |
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| Titanium in the periodic cairt |
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| Atomic nummer (Z) | 22 |
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| Group | group 4 |
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| Period | period 4 |
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| Block | d-block |
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| Element category | Transeetion metal |
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| Electron confeeguration | [Ar] 3d2 4s2 |
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| Electrons per shell | 2, 8, 10, 2 |
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| Pheesical properties |
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| Phase at STP | solit |
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| Meltin pynt | 1941 K (1668 °C, 3034 °F) |
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| Bylin pynt | 3560 K (3287 °C, 5949 °F) |
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| Density (near r.t.) | 4.506 g/cm3 |
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| when liquid (at m.p.) | 4.11 g/cm3 |
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| Heat o fusion | 14.15 kJ/mol |
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| Heat o vapourisation | 425 kJ/mol |
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| Molar heat capacity | 25.060 J/(mol·K) |
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Vapour pressur| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
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| at T (K) | 1982 | 2171 | (2403) | 2692 | 3064 | 3558 |
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| Atomic properties |
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| Oxidation states | −2, −1, 0,[3] +1, +2, +3, +4[4] (an amphoteric oxide) |
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| Electronegativity | Pauling scale: 1.54 |
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| Ionisation energies | - 1st: 658.8 kJ/mol
- 2nd: 1309.8 kJ/mol
- 3rd: 2652.5 kJ/mol
- (more)
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| Atomic radius | empirical: 147 pm |
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| Covalent radius | 160±8 pm |
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 Colour lines in a spectral rangeSpectral lines o titanium |
| Ither properties |
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| Naitural occurrence | primordial |
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| Creestal structur | hexagonal close-packed (hcp) |
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| Speed o soond thin rod | 5090 m/s (at r.t.) |
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| Thermal expansion | 8.6 µm/(m·K) (at 25 °C) |
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| Thermal conductivity | 21.9 W/(m·K) |
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| Electrical resistivity | 420 nΩ·m (at 20 °C) |
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| Magnetic orderin | paramagnetic |
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| Magnetic susceptibility | +153.0·10−6 cm3/mol (293 K)[5] |
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| Young's modulus | 116 GPa |
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| Shear modulus | 44 GPa |
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| Bulk modulus | 110 GPa |
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| Poisson ratio | 0.32 |
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| Mohs haurdness | 6.0 |
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| Vickers haurdness | 830–3420 MPa |
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| Brinell haurdness | 716–2770 MPa |
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| CAS Nummer | 7440-32-6 |
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| History |
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| Diskivery | William Gregor (1791) |
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| First isolation | Jöns Jakob Berzelius (1825) |
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| Named by | Martin Heinrich Klaproth (1795) |
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| Main isotopes o titanium |
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| | references |
| style="text-align:left"| |
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| in | calc from C | diff | report | ref |
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| C | 1668 | — | — | | |
| K | 1941 | 1941 | 0 | | |
| F | 3034 | 3034 | 0 | | |
| WD | 1941 !1941 kelvin 1670 Celsius  | | | |
| input | C: 1668, K: 1941, F: 3034 |
| comment | |
| style="text-align:left"| |
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| in | calc from C | diff | report | ref |
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| C | 3287 | — | — | | |
| K | 3560 | 3560 | 0 | | |
| F | 5949 | 5949 | 0 | | |
| WD | 3286.85 !3286.85 Celsius | | | |
| input | C: 3287, K: 3560, F: 5949 |
| comment | |
References
Thir references will appear in the airticle, but this list appears anerly on this page.
- ↑ "titanium - definition of titanium in English | Oxford Dictionaries". Oxford University Press. 2017. Retrieved 28 Mairch 2017.
- ↑ Meija, Juris; 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(S2CNR2)]−". Chem. Commun. (25): 2639–2641. doi:10.1039/B700808B. PMID 17579764.
- ↑ Andersson, N.; et al. (2003). "Emission spectra of TiH and TiD near 938 nm" (PDF). J. Chem. Phys. 118 (8): 10543. Bibcode:2003JChPh.118.3543A. doi:10.1063/1.1539848.
- ↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
