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| عمومي خواص |
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| Pronunciation | /ˈtɜrbiəm/
TUR-bee-əm |
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| Appearance | silvery white |
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| Terbium پهدوراني جدول کې |
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| اټومي شمیره(Z) | 65 |
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| گروپ,پیریود | group n/a,period 6 |
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| بلاک | f-block |
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| Element category | lanthanide |
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| معياري اټومي وزن (Ar) | کينډۍ:Val[۱] |
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| Electron configuration | [Xe] 4f9 6s2 |
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Electrons per shell | 2, 8, 18, 27, 8, 2 |
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| فزیکي خواص |
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| حالت(at STP) | جامد |
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| دويلې کيدو ټکى | 1629 K (1356 °C, 2473 °F) |
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| يشنا ټکی | 3396 K (3123 °C, 5653 °F) |
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| Density near r.t. | 8.23 g/cm3 |
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| when liquid, at m.p. | 7.65 g/cm3 |
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| Heat of fusion | 10.15 kJ/mol |
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| Heat of vaporization | 391 kJ/mol |
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| Molar heat capacity | 28.91 J/(mol·K) |
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Vapor pressure| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
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| at T (K) | 1789 | 1979 | (2201) | (2505) | (2913) | (3491) |
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| اټومي خواص |
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| Oxidation states | 4,3, 2, 1 (a weaklybasic oxide) |
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| Electronegativity | Pauling scale: 1.2 (?) |
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| Ionization energies | - 1st: 565.8 kJ/mol
- 2nd: 1110 kJ/mol
- 3rd: 2114 kJ/mol
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| Atomic radius | empirical: 177 pm |
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| Covalent radius | 194±5 pm |
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| Miscellanea |
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| Crystal structure | hexagonal close-packed (hcp) Hexagonal close packed crystal structure for terbium |
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| Speed of sound thin rod | 2620 m/s (at 20 °C) |
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| Thermal expansion | at r.t. α, poly: 10.3 µm/(m·K) |
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| د تودوخې تېرېدنه | 11.1 W/(m·K) |
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| Electrical resistivity | α, poly: 1.150 µΩ·m (atr.t.) |
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| Magnetic ordering | paramagnetic at 300 K |
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| Magnetic susceptibility(χmol) | +146,000·10−6 cm3/mol (273 K)[۲] |
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| Young's modulus | α form: 55.7 GPa |
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| Shear modulus | α form: 22.1 GPa |
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| Bulk modulus | α form: 38.7 GPa |
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| Poisson ratio | α form: 0.261 |
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| Vickers hardness | 450–865 MPa |
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| Brinell hardness | 675–1200 MPa |
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| CAS Number | 7440-27-9 |
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| History |
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| Naming | afterYtterby (Sweden), where it was mined |
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| Discovery and first isolation | Carl Gustaf Mosander (1842) |
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| Mainisotopes of terbium |
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|
| | references | in Wikidata |
