Iriidium

Iriidium as en cheemisk element mä det ufkörtang Ir an det atoomnumer 77. Hat as en auergungsmetal.

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Eegenskapen
Algemian
Nööm, Symbool, Numer Iriidium, Ir, 77
Seerie Auergungsmetal
Skööl, Periode, Blook 9, 6, d
Klöör, Skak salwern witj
CAS-Numer 7439-88-5
Uundial 0,001 ppm[1]
Atomaar [2]
Atoommase 192,217(3)[3] u
Atoomraadius (bereegent) 135 (180) pm
Kovalent-Raadius 141 pm
Elektroonen [Xe] 4f14 5d7 6s2
1. Ionisiarang 880 kJ/mol
2. Ionisiarang 1600 kJ/mol
Füsikaalisk [4]
Tustant fest
Kristal kuubisk
Sachthaid 22,56 g/cm3[5]
Hardhaid 6,5
Magnetismus paramagneetisk (Χm = 3,8 · 10−5)[6]
Smoltponkt 2739 K (2466 °C)
Köögponkt 4403 K[7] K (4130 °C)
Molaar Rüm 8,52 · 10−6 m3/mol
Dampwaremk 564 kJ/mol[7] kJ/mol
Smoltwaremk 26 kJ/mol
Faard faan a tuun 4825 m/s
Elektrisk struumfeerang 19,7 · 106 A/(V · m)
Waremkfeerang 150 W/(m · K)
Cheemisk [8]
Oksidatsionstustant −3, −1, 0, 1, 2, 3, 4, 5, 6, 8, 9[9]
Sür of baasisk lacht baasisk
Normoolpotentiaal 1,156 V (Ir3+ + 3e− → Ir)
Elektronegatiwiteet 2,20 (Pauling-Skala)
Isotoopen
Isotoop NH t1/2 Aktiwiteet Energii (MeV) Produkt
189Ir

{syn.}

 13,2 d ε 0,532 189Os
190Ir

{syn.}

 11,78 d ε 2,000 190Os
191Ir

37,3 %

 stabiil
192Ir

{syn.}

 73,830 d β− 1,460 192Pt
ε 1,046 192Os
192mIr

{syn.}

 241 a IT 0,155 192Ir
193Ir

62,7 %

 stabiil
194Ir

{syn.}

 19,15 h β− 2,247 194Pt
195Ir

{syn.}

 2,5 h β− 1,120 195Pt
Muar isotoopen bi List faan isotoopen
NMR-Eegenskapen
  Spin (I) γ uun
rad·T−1·s−1		 Er(1H) fL bi
B = 4,7 T
uun MHz
191Ir 3/2 4,812 · 106 1,09 · 10−5 1,72
193Ir 3/2 5,227 · 106 2,34 · 10−5 1,87
Seekerhaid
GHS-Kääntiaken [10]

Pulver

02 – Braant fiks gau

Gefoor

H- an P-wäärnang H: 228
EUH: nian EUH-wäärnang
P: 210 [10]
EU-Gefoorentiaken
ei bekäänd
ei bekäänd
R- an S-wäärnang R: ?
S: ?
Miast wurd SI-ianhaiden brükt.

Bilen

Luke uk diar
Commons Commonskategorii: Iriidium – Saamlang faan bilen of filmer

Kwelen
  1. Harry H. Binder: Lexikon der chemischen Elemente. S. Hirzel Verlag, Stuttgart 1999, ISBN 3-7776-0736-3.
  2. A taalen för't infobox kem miast faan www.webelements.com (Iridium) .
  3. CIAAW, Standard Atomic Weights Revised 2013.
  4. A taalen för't infobox kem miast faan www.webelements.com (Iridium) .
  5. J. W. Arblaster: Densities of Osmium and Iridium. Uun: Platinum Metals Review. 33, 1, 1989, S. 14–16 (Volltext; PDF; 209 kB).
  6. Robert C. Weast (Hrsg.): CRC Handbook of Chemistry and Physics. CRC (Chemical Rubber Publishing Company), Boca Raton 1990, ISBN 0-8493-0470-9, S. E-129 bit E-145. Wäärser diar uun g/mol an uun cgs-ianhaiden. Heer amreegent tu SI-wäärs.
  7. Yiming Zhang, Julian R. G. Evans, Shoufeng Yang: Corrected Values for Boiling Points and Enthalpies of Vaporization of Elements in Handbooks. Uun: Journal of Chemical & Engineering Data. 56, 2011, S. 328–337, doi:10.1021/je1011086.
  8. A taalen för't infobox kem miast faan www.webelements.com (Iridium) .
  9. Guanjun Wang, Mingfei Zhou, James T. Goettel, Gary G. Schrobilgen, Jing Su, Jun Li, Tobias Schlöder, Sebastian Riedel: Identification of an iridium-containing compound with a formal oxidation state of IX. In: Nature. Band 514, S. 475–477, doi:10.1038/nature13795.
  10. Iindraanj tu Iridium, Pulver uun't GESTIS-dootenbeenk faan't IFA, ufrepen di 30. April 2017 (mä JavaScript).
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