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Osmium

Osmium, 76Os
Osmium
ᵒosmiyum·
Pabaosan/ˈɒzmiəm/ (OZ-mee-əm)
Cingakansilvery, blue cast
Bobot atom standar Ar, std(Os)190.23(3)[1]
Osmium ring tabél périodik
Hidrogén Hélium
Litium Bérilium Boron Karbon Nitrogén Oksigén Fluorin Néon
Natrium Magnésium Aluminium Silikon Phosfor Urirang Klorin Argon
Potasium Kalsium Skandium Titanium Vanadium Kromium Mangan (datu) Wesi Kobalt Nikel Temaga Séng Gallium Gérmanium Arsenik Sélénium Brom Kripton
Rubidium Strontium Ittrium Zirkonium Niobium Molibdénum Téknésium Ruthénium Rhodium Palladium Pérak Kadmium Indium Timah Antimoni Téllurium Yodium Xénon
Sésium Barium Lanthanum Sérium Praséodimium Néodimium Prométhium Samarium Éuropium Gadolinium Terbium Disprosium Holmium Érbium Thulium Itterbium Lutésium Hafnium Tantalum Tungstén Rhénium Osmium Iridium Platinum Mas Rasa (datu) Thallium Timbal Bismuth Polonium Astatin Radon
Fransium Radium Aktinium Thorium Protaktinium Uranium Néptunium Plutonium Amérisium Curium Berkélium Kalifornium Éinsteinium Fermium Méndelevium Nobélium Lawrénsium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnérium Darmstadtium Roéntgénium Kopernikium Nihonium Flérovium Moskovium Livermorium Ténnessin Oganésson
Ru

Os

Hs
rhéniumosmiumiridium
Wilangan atom (Z)76
Watekgolongan 8
Périodepériode 6
Blok  blok-d
Konpigurasi éléktron[] 4f14 5d6 6s2
Éléktron per kulit2, 8, 18, 32, 14, 2
Cecirén pisik
Pase ring STPpadet
Titik lebur3306 K ​(3033 °C, ​5491 °F)
Titik didih5285 K ​(5012 °C, ​9054 °F)
Kapadetan (nampek s.r.)22.59 g/cm3
ri kala éncéh (ring t.l.)20 g/cm3
Panes fusi31 kJ/mol
Panes panguapan378 kJ/mol
Kapasitas panes molar24.7 J/(mol·K)
Tekanan uap
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 3160 3423 3751 4148 4638 5256
Cecirén atom
Paindikan oksidasi−4, −2, −1, 0, +1, +2, +3, +4, +5, +6, +7, +8 (oksida asam tenga)
Kaéléktronégatipanskala Pauling: 2.2
Wasa ionisasi
  • ka-1: 840 kJ/mol
  • ka-2: 1600 kJ/mol
Jeriji atomémpiris: 135 pm
Jeriji kovalén144±4 pm
Garis warna ring pentang spéktrum
Garis spéktral saking osmium
Cecirén liyanan
Rupa alamiprimordial
Struktur kristal ​susunan padat héksagon (hcp)
Hexagonal close packed crystal structure for osmium
Kagelisan swara pales tipis4940 m/s (ring 20 °C)
Ékspansi térmal5.1 µm/(m⋅K) (ring 25 °C)
Konduktivitas térmal87.6 W/(m⋅K)
Resistivitas listrik81.2 nΩ⋅m (ring 0 °C)
bacakan magnétikparamagnétik[2]
Karentanan magnétik molar11×10−6 cm3/mol[2]
Modulus Shear222 GPa
Modulus Bulk462 GPa
Rasio Poisson0.25
Kakatosan Mohs7.0
Kakatosan Vickers300 MPa
Kakatosan Brinell293 MPa
Nomor CAS7440-04-2
Lelintihan
Panemuan miwah isolasi kapertamaSmithson Tennant (1803)
Isotop utama osmium
Iso­top Kalimpahan Paruh-idup (t1/2) Mode paluruhan Pro­duk
184Os 0.02% 1.12×1013 y[3] α 180W
185Os syn 93.6 d ε 185
186Os 1.59% 2.0×1015 y α 182W
187Os 1.96% tegteg
188Os 13.24% tegteg
189Os 16.15% tegteg
190Os 26.26% tegteg
191Os syn 15.4 d β 191Ir
192Os 40.78% tegteg
193Os syn 30.11 d β 193Ir
194Os syn 6 y β 194Ir
Kategori:Osmium
| pustaka

Osmium (saking Yunani ὀσμή osme, "aub") silih tunggil datu kimia antuk simbol Os miwah wilangan atom 76. Punika logam transisi katos, emes, putih masawang pelung ring seka platinum sané katemuin manados lad datu ring paduan, makéhan ring wiji platinum. Osmium punika datu alami pinih padet, antuk pangukuran uji dénsitas 22.65 g/cm3 (nganggén kristalograpi sunar-x).

Pustaka

[uah | uah wit]
  1. Méija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  2. 2,0 2,1 Haynes 2011, p. 4.134.
  3. Peters, Stefan T.M.; Münker, Carsten; Becker, Harry; Schulz, Toni (April 2014). "Alpha-decay of 184Os revealed by radiogenic 180W in meteorites: Half life determination and viability as geochronometer". Earth and Planetary Science Letters. 391: 69–76. doi:10.1016/j.epsl.2014.01.030.

Pranala jaba

[uah | uah wit]
  • Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (édisi ka-92nd). CRC Press. ISBN 978-1439855119.
  • Osmium at The Periodic Table of Videos (University of Nottingham)
  • FLEGENHEIMER, J. (2014). The mystery of the disappearing isotope. Revista Virtual de Química. V. XX. Available at Wayback Machine
  • Chisholm, Hugh, ed. (1911). "Osmium" . Encyclopædia Britannica. 20 (édisi ka-11th). Cambridge University Press. p. 352.
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Osmium
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