تېربيوم (په انگرېزي: Terbium) له کیمیاوي عناصرو څخه یو دی چې په تناوبي جدول کې د Tb سمبول او ۶۵ اتمي شمېرې په وسیله ښودل شوی دی.
چټک مالومات عمومي خواص, Pronunciation ...
Terbium, 65Tb |
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| Pronunciation | /ˈtɜrbiəm/
TUR-bee-əm |
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| Appearance | silvery white |
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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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| 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 |
| at T (K) |
1789 |
1979 |
(2201) |
(2505) |
(2913) |
(3491) |
|
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| Oxidation states | 4, 3, 2, 1 (a weakly basic 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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| 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 (at r.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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| Naming | after Ytterby (Sweden), where it was mined |
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| Discovery and first isolation | Carl Gustaf Mosander (1842) |
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| آيسوټوپ |
Abundance |
نیم ژوند (t1/2) |
Decay mode |
Product |
| 157Tb |
syn |
71 y |
ε |
157Gd
کينډۍ:Infobox element/isotopes decay2 |
| 159Tb |
100% |
stable |
|
| | references | in Wikidata |
تړل
