لوتيتيوم

Lutetium, ₇₁Lu
عمومي خواص
Pronunciation	/ljuːˈtiːʃiəm/ ; lew-TEE-shee-əm
Appearance	silvery white
Lutetium په دوراني جدول کې
ytterbium ← lutetium → hafnium	‍
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
Electron configuration	[Xe] 4f14 5d1 6s2
Electrons per shell	2, 8, 18, 32, 9, 2
فزیکي خواص
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)
اټومي خواص
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
Miscellanea
Crystal structure	hexagonal close-packed (hcp) Hexagonal close packed crystal structure for lutetium
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
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
History
Naming	after Lua error د Module:Unicode_data په 310 کرښه کې: attempt to index local 'data_module' (a boolean value)., 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)
Main isotopes of lutetium
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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.

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سرچينې

↑ 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. {{cite journal}}: Unknown parameter |displayauthors= ignored (|display-authors= suggested) (help)
↑ Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.

دا ليکنه نابشپړه ده، تاسې ددې ليکنې په بشپړولو کې د ويکيپېډيا سره مرسته کولای شئ.

[CIAAW2016-1] 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. {{cite journal}}: Unknown parameter |displayauthors= ignored (|display-authors= suggested) (help)

[magnet-2] Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.

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