Wolfram, 74W| ngoi-kôn |
|---|
grayish white, lustrous
 |
| Kî-pún sin-sit |
|---|
| Miàng, fù-ho |
Wolfram, W |
|---|
| phe̍t-miàng |
tungsten |
|---|
| ngoi-hìn |
grayish white, lustrous |
|---|
| Wolfram chhai chû-khì-péu ke vi-chi |
|---|
|
|
| ngièn-chṳ́ sì-sú |
74 |
|---|
| ngièn-chṳ́-liòng (±) |
183.84(1)[1] |
|---|
| ngièn-su lui-phe̍t |
ko-thu kîm-su̍k |
|---|
| Chhu̍k, fûn-khî |
6 chhu̍k, d-block |
|---|
| chû-khì |
period 6 |
|---|
| thien-chṳ́ phài-lie̍t |
[Xe] 4f14 5d4 6s2[2] |
|---|
| per shell |
2, 8, 18, 32, 12, 2 |
|---|
| vu̍t-lî sin-chṳt |
|---|
| Siông |
ku-thí |
|---|
| yùng-tiám |
3695 K (3422 °C, 6192 °F) |
|---|
| pui-tiám |
6203 K (5930 °C, 10,706 °F) |
|---|
| Me̍t-thu near Sit-vûn |
19.25 g·cm−3 |
|---|
|
17.6 g·cm−3 |
| lìm-kie-tiám |
13,892 K, MPa |
|---|
| Yùng-fa-ngie̍t |
35.3 kJ·mol−1 |
|---|
| Chîn-fat-ngie̍t |
774 kJ·mol−1 |
|---|
| Ngie̍t-yùng-liong |
24.27 J·mol−1·K−1 |
|---|
chîn-hi-ap
| P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
| chhai T (K)
|
3477
|
3773
|
4137
|
4579
|
5127
|
5823
| |
| Ngièn-chṳ́ sin-chṳt |
|---|
| Yông-fa-su |
6, 5, 4, 3, 2, 1, 0, −1, −2, −4 (a mildly acidic oxide) |
|---|
| Thien-fu-sin |
Pauling scale: 2.36 |
|---|
| Thien-lì-nèn |
1st: 770 kJ·mol−1
2nd: 1700 kJ·mol−1 |
|---|
| Ngièn-chṳ́ pan-kang |
empirical: 139 pm |
|---|
| Khiung-ka pan-kang |
162±7 pm |
|---|
| Miscellanea |
|---|
| Chîn-thí keu-chho |
body-centered cubic (bcc) |
|---|
| Sâng-suk thin rod |
4620 m·s−1 (at r.t.) (annealed) |
|---|
| Ngie̍t-phàng-chong |
4.5 µm·m−1·K−1 (at 25 °C) |
|---|
| Ngie̍t-chhòn-thô-li̍t |
173 W·m−1·K−1 |
|---|
| Thien-chú-li̍t |
52.8 nΩ·m (at 20 °C) |
|---|
| Chhṳ̀-sin |
paramagnetic[3] |
|---|
| Young's modulus |
411 GPa |
|---|
| Shear modulus |
161 GPa |
|---|
| Bulk modulus |
310 GPa |
|---|
| Poisson ratio |
0.28 |
|---|
| Mohs hardness |
7.5 |
|---|
| Vickers hardness |
3430–4600 MPa |
|---|
| Brinell hardness |
2000–4000 MPa |
|---|
| CAS Registry Number |
7440-33-7 |
|---|
| Le̍k-sú |
|---|
| Hí-miàng |
from German wolfram |
|---|
| Fat-hien |
Carl Wilhelm Scheele (1781) |
|---|
| First isolation |
Juan José Elhuyar and Fausto Elhuyar (1783) |
|---|
| Chui vún-thin ke thùng-vi-su |
|---|
|
Chú vùn-chông: Wolfram ke thùng-vi-su |
| iso
|
NA
|
half-life
|
DM
|
DE (MeV)
|
DP
|
| 180W
|
0.12%
|
1.8×1018 y
|
α
|
2.516
|
176Hf
|
| 181W
|
syn
|
121.2 d
|
ε
|
0.188
|
181Ta
|
| 182W
|
26.50%
|
>1.7×1020 y
|
(α)
|
1.772
|
178Hf
|
| 183W
|
14.31%
|
>8×1019 y
|
(α)
|
1.680
|
179Hf
|
| 184W
|
30.64%
|
>1.8×1020 y
|
(α)
|
1.123
|
180Hf
|
| 185W
|
syn
|
75.1 d
|
β−
|
0.433
|
185Re
|
| 186W
|
28.43%
|
>4.1×1018 y
|
(α)
|
1.656
|
182Hf
|
| (β−β−)
|
–
|
186Os
| |
|
Decay modes in parentheses are predicted, but have not yet been observed |
Wolfram (Hon-ngî: 鎢 wū) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì W, ngièn-chṳ́ su-muk he 74.
