Wolfram , ia̍h kiò Tungsten , sī 1 ê hoà-ha̍k goân-sò͘ . I ê goân-chú-hoan sī 74, hoà-ha̍k hû-hō sī W.
Wolfram, 74 W
Ki-pún sèng-chit Miâ, hû-hō
wolfram, W Phian-miâ
tungsten Gōa-hêng
grayish white, lustrous Wolfram tī chiu-kî-piáu lāi ê ūi-tì
Goân-chú-hoan
74 Goân-chú-liōng (±)
183.84(1)[ 1] Goân-sò͘ lūi-pia̍t
kòe-tō͘ kim-sio̍k Cho̍k , hun-khu
6 cho̍k , d khu Chiu-kî
tē 6 chiu-kî Tiān-chú pâi-lia̍t
[Xe ] 4f14 5d4 6s2 [ 2] per shell
2, 8, 18, 32, 12, 2 Bu̍t-lí sèng-chit Siòng
kò͘-thé Iûⁿ-tiám
3695 K (3422 °C, 6192 °F) Hut-tiám
6203 K (5930 °C, 10,706 °F) Bi̍t-tō͘ (sek-un )
19.25 g·cm−3
17.6 g·cm−3 Lîm-kài-tiám
13,892 K, MPa Iûⁿ-hoà-jia̍t
35.3 kJ·mol−1 Cheng-hoat-jia̍t
774 kJ·mol−1 Jia̍t-iông-liōng
24.27 J·mol−1 ·K−1
cheng-khì-ap
P (Pa)
1
10
100
1 k
10 k
100 k
tī T (K)
3477
3773
4137
4579
5127
5823
Goân-chú sèng-chit Sng-hòa-sò͘
6 , 5, 4 , 3, 2, 1, 0, −1, −2, −4 (a mildly acid ic oxide) Tiān-hū-tō͘
Pauling scale: 2.36 Tiān-lī-lêng
1st: 770 kJ·mol−1 2nd: 1700 kJ·mol−1 Goân-chú pòaⁿ-kèng
empirical: 139 pm Kiōng-kè pòaⁿ-kèng
162±7 pm Cha̍p-lio̍k Chiⁿ-thé kò͘-chō
body-centered cubic (bcc) Siaⁿ-sok (sòe kùn-á)
4620 m·s−1 (at r.t. ) (annealed) Jia̍t-phòng-tiòng
4.5 µm·m−1 ·K−1 (at 25 °C) Jia̍t-thoân-tō-lu̍t
173 W·m−1 ·K−1 Tiān-chó͘-lu̍t
52.8 nΩ·m (at 20 °C) Chû-sèng
paramagnetic [ 3] Young hē-sò͘
411 GPa Shear hē-sò͘
161 GPa Bulk hē-sò͘
310 GPa Poisson pí
0.28 Mohs ngē-tō͘
7.5 Vickers ngē-tō͘
3430–4600 MPa Brinell ngē-tō͘
2000–4000 MPa CAS teng-kì pian-hō
7440-33-7 Le̍k-sú Hō-miâ
from German wolfram Hoat-hiān
Carl Wilhelm Scheele (1781) Siōng chá hû-lî
Juan José Elhuyar and Fausto Elhuyar (1783) Chòe ún-tēng ê tông-ūi-sò͘
Chú bûn-chiong: wolfram ê tông-ūi-sò͘
iso
NA
half-life
DM
DE (MeV )
DP
180 W
0.12%
1.8×1018 y
α
2.516
176 Hf
181 W
syn
121.2 d
ε
0.188
181 Ta
182 W
26.50%
>1.7×1020 y
(α)
1.772
178 Hf
183 W
14.31%
>8×1019 y
(α)
1.680
179 Hf
184 W
30.64%
>1.8×1020 y
(α)
1.123
180 Hf
185 W
syn
75.1 d
β−
0.433
185 Re
186 W
28.43%
>4.1×1018 y
(α)
1.656
182 Hf
(β− β− )
–
186 Os
Decay modes in parentheses are predicted, but have not yet been observed