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| Titanium | |
|---|---|
| Pronunciation | / t aɪ ˈ t eɪ n i ə m / ⓘ / ( ty- TAY -nee-əm ) · / t ə ˈ t eɪ n i ə m / ⓘ / ( tə- TAY -nee-əm ) |
| Appearance | silvery grey-white metallic |
| Standard atomic weight A r°(Ti) | |
| [ 2 ] | 47.867 ± 0.001 · 47.867 ± 0.001 ( abridged ) |
| Titanium in the periodic table | |
| Hydrogen | Helium |
| Lithium | Beryllium |
| Sodium | Magnesium |
| Potassium | Calcium |
| Rubidium | Strontium |
| Caesium | Barium |
| Francium | Radium |
| Atomic number ( Z ) | 22 |
| Group | group 4 |
| Period | period 4 |
| Block | 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 (at 20° C) | 4.502 g/cm3 |
| (near r.t. ) | 4.322 g/cm3 46 / Ti |
| 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) |
| Specific heat capacity | 523.534 J/(kg · K) |
| 1982 | 2171 |
| Atomic properties | |
| Oxidation states | common: +4 / −2, −1, 0, +1, +2, +3 |
| 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 |
| Other properties | |
| Natural occurrence | primordial |
| Crystal structure | hexagonal close-packed (hcp) ( hP2 ) |
| Thermal expansion | 9.68 × 10−6 /K (at 20 °C) |
| Thermal conductivity | 21.9 W/(m⋅K) |
| Electrical resistivity | 420 nΩ⋅m (at 20 °C) |
| Magnetic ordering | paramagnetic |
| Molar magnetic susceptibility | +153.0 × 10−6 cm3/mol (293 K) |
| Young's modulus | 120 GPa |
| Shear modulus | 44 GPa |
| Bulk modulus | 110 GPa |
Wikipedia
Chemical element with atomic number 22 (Ti)
Titanium is a chemical element; it has symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength that is resistant to corrosion in sea water, aqua regia, and chlorine.