| Eegenskapen
|
|
|
| Algemian
|
| Nööm, Symbool, Numer
|
Wolfraam, W, 74
|
| Seerie
|
Auergungsmetal
|
| Skööl, Periode, Blook
|
6, 6, d
|
| Klöör, Skak
|
grä-witj skürnin
|
| CAS-Numer
|
7440-33-7
|
| Uundial
|
64 ppm[1]
|
| Atomaar [2]
|
| Atoommase
|
183,84(1)[3] u
|
| Atoomraadius (bereegent)
|
135 (193) pm
|
| Kovalent-Raadius
|
162 pm
|
| Elektroonen
|
[Xe] 4f145d46s2
|
| 1. Ionisiarang
|
770 kJ/mol
|
| 2. Ionisiarang
|
1700 kJ/mol
|
| Füsikaalisk [2]
|
| Tustant
|
fääst
|
| Kristal
|
kuubisk
|
| Sachthaid
|
19,25 g/cm3 (20 °C)[4]
|
| Hardhaid
|
7,5
|
| Magnetismus
|
paramagneetisk (Χm = 7,8 · 10−5)[5]
|
| Smoltponkt
|
3695 K (3422 °C)
|
| Köögponkt
|
6203 K[6] K (5930 °C)
|
| Molaar Rüm
|
9,47 · 10−6 m3/mol
|
| Dampwaremk
|
774 kJ/mol[6] kJ/mol
|
| Smoltwaremk
|
35,2[7] kJ/mol
|
| Faard faan a tuun
|
5174 m/s
|
| Waremk
|
138 J/(kg · K)
|
| Elektrisk struumfeerang
|
18,52 · 106 A/(V · m)
|
| Waremkfeerang
|
170 W/(m · K)
|
| Cheemisk [2]
|
| Oksidatsionstustant
|
6, 5, 4, 3, 2
|
| Sür of baasisk
|
lacht sür
|
| Normoolpotentiaal
|
−0,119 V (WO2 + 4H+ + 4e−
→ W + 2H2O)
|
| Elektronegatiwiteet
|
2,36 (Pauling-Skala)
|
| Isotoopen
|
| Isotoop
|
NH
|
t1/2
|
Aktiwiteet
|
Energii (MeV)
|
Produkt
| | 178W |
{syn.}
| 21,6 d | ε | 0,091 | 178Ta |
| 179W |
{syn.}
| 37,05 min | ε | 1,060 | 179Ta |
| 180W |
0,13 %
| 1,8 · 1018 a | α | 2,516 | 176Hf |
| 181W |
{syn.}
| 121,2 d | ε | 0,188 | 181Ta |
| 182W |
26,3 %
|
stabiil |
| 183W |
14,3 %
|
stabiil |
| 184W |
30,67 %
|
stabiil |
| 185W |
{syn.}
| 75,1 d | β− | 0,433 | 185Re |
| 186W |
28,6 %
|
stabiil |
| 187W |
{syn.}
| 23,72 h | β− | 1,311 | 187Re |
| 188W |
{syn.}
| 69,4 d | β− | 0,349 | 188Re |
|
| Muar isotoopen bi List faan isotoopen
|
| NMR-Eegenskapen
|
|
|
| Seekerhaid
|
|
|
| Miast wurd SI-ianhaiden brükt.
|
Wolfraam as en cheemisk element mä det ufkörtang W an det atoomnumer 74. Hat as en auergungsmetal mä di huuchst smoltponkt (3422 °C) faan aal a elementen. Diaram woort wolfraam uun lampen iinsaat.
-
SIMS-spektrum faan a
isotoopen
-
Elektroonenskel
-
Rian wolfraam
-
Osram-lampen haa en triad ütj
osmium an wolf
raam
- ↑ Harry H. Binder: Lexikon der chemischen Elemente. S. Hirzel Verlag, Stuttgart 1999, ISBN 3-7776-0736-3.
- ↑ A taalen för't infobox kem miast faan www.webelements.com (Wolfram) .
- ↑ CIAAW, Standard Atomic Weights Revised 2013.
- ↑ N. N. Greenwood, A. Earnshaw: Chemie der Elemente. 1. aplaag. VCH, Weinheim 1988, ISBN 3-527-26169-9, S. 1291.
- ↑ 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.
- ↑ 6,0 6,1 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.
- ↑ E. Lassner, W.-D. Schubert, E. Lüderitz, H. U. Wolf: Tungsten, Tungsten Alloys, and Tungsten Compounds. Uun: Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH Verlag, Weinheim 2005, doi:10.1002/14356007.a27_229.
- ↑ 8,0 8,1 Iindraanj tu Wolfram (Pulver) uun't GESTIS-dootenbeenk faan't IFA, ufrepen di 26. April 2017 (mä JavaScript).
Tekst üüb Öömrang
Elektroonenskel
Rian wolfraam
Osram-lampen haa en triad ütj osmium an wolfraam
Commonskategorii: Wolfraam – Saamlang faan bilen of filmer