Volfram — W
Grundämnet Volfram är ett grundämne av typen Övergångsmetall med symbolen W. Det har en atommassa på 183.84 u och elektronkonfigurationen [Xe] 4f14 5d4 6s2.
Synthétique
Radioactif
Liquide
Gaz
5927°
-1
1
2
3
4
5
6
8
18
32
12
2
- Atomnummer
- 74
- Atommassa
- 183.84
- Symbol
- W
- Smältpunkt
- 3407
- Kokpunkt
- 5927
- Densitet
- 19.25
- Period
- 6
- Grupp
- 6
- Upptäckt
- 1783 J. and F. d'Elhuyar
- Förekomst
- 1.3
- Radie
- 2
- Elektronegativitet
- 2.36
- Jonisering
- 7.864
- Isotop
- 22
- Elektronkonfiguration
- [Xe] 4f14 5d4 6s2
- Oxidationstillstånd
- -2,-1,1,2,3,4,5,6
- Elektron
- 2,8,18,32,12,2
Mineraler som innehåller Volfram
| förnamn | Hårdhet | Densitet | Kemisk formel |
|---|---|---|---|
| Alumotungstite | — | 0.00 | (H2O,Ca)x(W,Al)2(O,OH)6·nH2O |
| Anthoinite | — | 4.80 | AlWO3(OH)3 |
| Baotite | — | 4.42 | Ba4(Ti,Nb,W)8O16(SiO3)4Cl |
| Billwiseite | — | 6.33 | Sb3+5Nb3WO18 |
| Catamarcaite | — | 4.89 | Cu6GeWS8 |
| Cuprotungstite | — | 7.06 | Cu2+3(WO4)2(OH)2 |
| Ekplexite | — | 3.63 | (Nb,Mo,W)S2·(Mg1-xAlx)(OH)2+x |
| Ferberite | — | 7.50 | Fe2+WO4 |
| Ferritungstite | — | 5.02 | (W,Fe3+)2(O,OH)6·n(H2O,K,Ca,Na) |
| Hexamolybdenum | — | 11.90 | (Mo,Ru,Fe,Ir,Os) |
| Huanzalaite | — | 0.00 | MgWO4 |
| Hübnerite | — | 7.20 | Mn2+WO4 |
| Hydrokenoelsmoreite | — | 0.00 | 2W2O6(H2O) |
| Hydroroméite | — | 0.00 | (Ca,Mn)(Sb,W,As)2O6·4.2H2O |
| Hydrotungstite | — | 4.60 | WO2(OH)2·H2O |
| Jixianite | — | 6.04 | (Pb)2(W,Fe3+)2(O,OH)7 |
| Johnsenite-(Ce) | — | 3.20 | Na12Ce3Ca6Mn3Zr3WSi25O73(CO3)(OH)2 |
| Khomyakovite | — | 3.14 | Na12Ca6Sr3Fe3WZr3(Si25O73)(O,OH,H2O)3(Cl,OH)2 |
| Kiddcreekite | — | 4.00 | Cu6WSnS8 |
| Koragoite | — | 4.70 | Mn2+2Mn3+Nb2(Nb,Ta)3W2O20 |
| Maikainite | — | 4.45 | Cu10Fe3MoGe3S16 |
| Manganokhomyakovite | — | 3.13 | Na12Ca6Sr3Mn2+3WZr3(Si25O73)(O,OH,H2O)3(Cl,OH)2 |
| Meymacite | — | 3.94 | WO3·2H2O |
| Mpororoite | — | 4.00 | Al2O(WO4)2·6H2O |
| Ophirite | — | 4.06 | Ca2Mg4[Zn2Mn3+2(H2O)2(Fe3+W9O34)2]·46H2O |
| Ovamboite | — | 4.74 | Cu10Fe3WGe3S16 |
| Paraniite-(Y) | — | 0.00 | (Ca,Y,Dy)2Y(WO4)2AsO4 |
| Phyllotungstite | — | 5.26 | HCaFe3+3(WO4)6·10H2O |
| Pinalite | — | 7.00 | Pb3(WO4)OCl2 |
| Pittongite | — | 5.72 | (Na,H2O)0.7(W,Fe3+)(O,OH)3 |
| Plumbobetafite | — | 4.64 | (Pb,U,Ca)2(Ti,Nb)2(O,OH,F)7 |
| Qitianlingite | — | 6.42 | Fe2+2Nb2W6+O10 |
| Qusongite | — | 15.84 | WC |
| Rankachite | — | 4.50 | Ca0.5(V4+,V5+)(W6+,Fe3+)2O8(OH)·2H2O |
| Raspite | — | 8.47 | PbWO4 |
| Russellite | — | 7.35 | Bi2WO6 |
| Samarskite-(Yb) | — | 7.03 | YbNbO4 |
| Sanmartinite | — | 6.70 | ZnWO4 |
| Scheelite | — | 5.90 | CaWO4 |
| Stolzite | — | 7.90 | PbWO4 |
| Tewite | — | 0.00 | K2(Te1.50.5)2W5O19 |
| Tungsten | — | 0.00 | W |
| Tungstenite | — | 7.40 | WS2 |
| Tungstibite | — | 6.69 | Sb2WO6 |
| Tungstite | — | 5.50 | WO3·H2O |
| Uranotungstite | — | 4.27 | Fe(UO2)2WO4(OH)4·12H2O |
| Welinite | — | 4.00 | (Mn4+,W)(Mn2+,Mg)(SiO4)(O,OH)3 |
| Yttrotungstite-(Ce) | — | 5.96 | CeW2O6(OH)3 |
| Yttrotungstite-(Y) | — | 5.96 | Y(W,Fe,Si,Al,Ti)2(O,OH,H2O)9 |