رېنيوم

Rhenium, ₇₅Re
عمومي خواص
Pronunciation	/ˈriːniəm/ ; REE-nee-əm
Appearance	silvery-grayish
Rhenium په دوراني جدول کې
tungsten ← rhenium → osmium	‍
اټومي شمیره (Z)	75
گروپ, پیریود	group 7, period 6
بلاک	d-block
Element category	transition metal
معياري اټومي وزن (Ar)	کينډۍ:Val
Electron configuration	[Xe] 4f14 5d5 6s2
Electrons per shell	2, 8, 18, 32, 13, 2
فزیکي خواص
حالت (at STP)	جامد
دويلې کيدو ټکى	3459 K (3186 °C, 5767 °F)
يشنا ټکی	5903 K (5630 °C, 10,170 °F)
Density near r.t.	21.02 g/cm3
when liquid, at m.p.	18.9 g/cm3
Heat of fusion	60.43 kJ/mol
Heat of vaporization	704 kJ/mol
Molar heat capacity	25.48 J/(mol·K)
اټومي خواص
Oxidation states	7, 6, 5, 4, 3, 2, 1, 0, −1, −3 (a mildly acidic oxide)
Electronegativity	Pauling scale: 1.9
Ionization energies	1st: 760 kJ/mol ; 2nd: 1260 kJ/mol ; 3rd: 2510 kJ/mol ; (more) ;
Atomic radius	empirical: 137 pm
Covalent radius	151±7 pm
Miscellanea
Crystal structure	hexagonal close-packed (hcp) Hexagonal close packed crystal structure for rhenium
Speed of sound thin rod	4700 m/s (at 20 °C)
Thermal expansion	6.2 µm/(m·K)
د تودوخې تېرېدنه	48.0 W/(m·K)
Electrical resistivity	193 nΩ·m (at 20 °C)
Magnetic ordering	paramagnetic
Magnetic susceptibility (χmol)	+67.6·10−6 cm3/mol (293 K)
Young's modulus	463 GPa
Shear modulus	178 GPa
Bulk modulus	370 GPa
Poisson ratio	0.30
Mohs hardness	7.0
Vickers hardness	1350–7850 MPa
Brinell hardness	1320–2500 MPa
CAS Number	7440-15-5
History
Naming	after the river Rhine (German: Script error: The function "Lang" does not exist.)
Discovery	Masataka Ogawa (1908)
First isolation	Masataka Ogawa (1919)
Named by	Walter Noddack, Ida Noddack, Otto Berg (1925)
Main isotopes of rhenium
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رېنيوم (په انگرېزي: Rhenium) له کیمیاوي عناصرو څخه یو دی چې په تناوبي جدول کې د Re سمبول او v۵ 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.
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

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)

[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.

[3] Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

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