د ويکيپېډيا، وړیا پوهنغونډ له خوا
Lutetium, 71Lu |
|
Pronunciation | /ljuːˈtiːʃiəm/ lew-TEE-shee-əm |
---|
Appearance | silvery white |
---|
|
|
|
اټومي شمیره (Z) | 71 |
---|
گروپ, پیریود | group n/a, period 6 |
---|
بلاک | f-block |
---|
Element category | lanthanide, sometimes considered a transition metal |
---|
معياري اټومي وزن (Ar) | کينډۍ:Val[۱] |
---|
Electron configuration | [Xe] 4f14 5d1 6s2 |
---|
Electrons per shell | 2, 8, 18, 32, 9, 2 |
---|
|
حالت (at STP) | جامد |
---|
دويلې کيدو ټکى | 1925 K (1652 °C, 3006 °F) |
---|
يشنا ټکی | 3675 K (3402 °C, 6156 °F) |
---|
Density near r.t. | 9.841 g/cm3 |
---|
when liquid, at m.p. | 9.3 g/cm3 |
---|
Heat of fusion | ca. 22 kJ/mol |
---|
Heat of vaporization | 414 kJ/mol |
---|
Molar heat capacity | 26.86 J/(mol·K) |
---|
Vapor pressure
P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
at T (K)
|
1906
|
2103
|
2346
|
(2653)
|
(3072)
|
(3663)
| |
|
Oxidation states | 3, 2, 1 (a weakly basic oxide) |
---|
Electronegativity | Pauling scale: 1.27 |
---|
Ionization energies | - 1st: 523.5 kJ/mol
- 2nd: 1340 kJ/mol
- 3rd: 2022.3 kJ/mol
-
|
---|
Atomic radius | empirical: 174 pm |
---|
Covalent radius | 187±8 pm |
---|
|
Crystal structure | hexagonal close-packed (hcp) |
---|
Thermal expansion | poly: 9.9 µm/(m·K) (at r.t.) |
---|
د تودوخې تېرېدنه | 16.4 W/(m·K) |
---|
Electrical resistivity | poly: 582 nΩ·m (at r.t.) |
---|
Magnetic ordering | paramagnetic[۲] |
---|
Young's modulus | 68.6 GPa |
---|
Shear modulus | 27.2 GPa |
---|
Bulk modulus | 47.6 GPa |
---|
Poisson ratio | 0.261 |
---|
Vickers hardness | 755–1160 MPa |
---|
Brinell hardness | 890–1300 MPa |
---|
CAS Number | 7439-94-3 |
---|
|
Naming | after Lutetia, Latin for: Paris, in the Roman era |
---|
Discovery | Carl Auer von Welsbach and Georges Urbain (1906) |
---|
First isolation | Carl Auer von Welsbach (1906) |
---|
Named by | Georges Urbain (1906) |
---|
|
|
| references | in Wikidata |
لوتيتيوم (په انگرېزي: Lutetium) له کیمیاوي عناصرو څخه یو دی چې په تناوبي جدول کې د Lu سمبول او v۱ اتمي شمېرې په وسیله ښودل شوی دی.
تاریخچه[سمول]
د استعمال ځایونه[سمول]
- ↑ Meija, J.; Coplen, T. B. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure Appl. Chem. 88 (3): 265-91. doi:10.1515/pac-2015-0305. https://www.degruyter.com/downloadpdf/j/pac.2016.88.issue-3/pac-2015-0305/pac-2015-0305.xml.
- ↑ Lide, D. R., المحرر (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (الطبعة 86th). Boca Raton (FL): CRC Press. د کتاب نړيواله کره شمېره 0-8493-0486-5.
دا ليکنه نابشپړه ده، تاسې ددې ليکنې په بشپړولو کې د ويکيپېډيا سره مرسته کولای شئ.
|