Wolfram,   ₇₄ W

ngoi-kon
grayish white, lustrous
Ki-pun sin-sit
Miang, fu-ho	Wolfram, W
phe?t-miang	tungsten
ngoi-hin	grayish white, lustrous
Wolfram chhai chu-khi-peu ke vi-chi
Mo ↑ W ↓ Sg tantalum ← Wolfram → rhenium
ngien-ch?? si-su	74
ngien-ch??-liong   (±)	183.84(1) [1]
ngien-su lui-phe?t	ko-thu kim-su?k
Chhu?k , fun-khi	6 chhu?k , d-block
chu-khi	period 6
thien-ch?? phai-lie?t	[ Xe ] 4f 14 5d 4 6s 2 [2]
per shell	2, 8, 18, 32, 12, 2
vu?t-li sin-ch?t
Siong	ku-thi
yung-tiam	3695  K ​(3422 °C, ​6192 °F)
pui-tiam	6203 K ​(5930 °C, ​10,706 °F)
Me?t-thu near  Sit-vun	19.25 g·cm ?3
17.6 g·cm ?3
lim-kie-tiam	13,892 K,  MPa
Yung-fa-ngie?t	35.3  kJ·mol ?1
Chin-fat-ngie?t	774 kJ·mol ?1
Ngie?t-yung-liong	24.27 J·mol ?1 ·K ?1
chin-hi-ap P (Pa) 1 10 100 1 k 10 k 100 k chhai T (K) 3477 3773 4137 4579 5127 5823
Ngien-ch?? sin-ch?t
Yong-fa-su	6 , 5, 4 , 3, 2, 1, 0, ?1, ?2, ?4 ​(a mildly acid ic oxide)
Thien-fu-sin	Pauling scale: 2.36
Thien-li-nen	1st: 770 kJ·mol ?1 2nd: 1700 kJ·mol ?1
Ngien-ch?? pan-kang	empirical: 139  pm
Khiung-ka pan-kang	162±7 pm
Miscellanea
Chin-thi keu-chho	​ body-centered cubic (bcc)
Sang-suk thin rod	4620 m·s ?1 (at  r.t. ) (annealed)
Ngie?t-phang-chong	4.5 μm·m ?1 ·K ?1 (at 25 °C)
Ngie?t-chhon-tho-li?t	173 W·m ?1 ·K ?1
Thien-chu-li?t	52.8 nΩ·m (at 20 °C)
Chh??-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
Le?k-su
Hi-miang	from German wolfram
Fat-hien	Carl Wilhelm Scheele (1781)
First isolation	Juan Jose Elhuyar and Fausto Elhuyar (1783)
Chui vun-thin ke thung-vi-su
Chu vun-chong: Wolfram ke thung-vi-su
iso NA half-life DM DE   ( MeV ) DP 180 W 0.12% 1.8×10 18  y α 2.516 176 Hf 181 W syn 121.2 d ε 0.188 181 Ta 182 W 26.50% >1.7×10 20  y (α) 1.772 178 Hf 183 W 14.31% >8×10 19  y (α) 1.680 179 Hf 184 W 30.64% >1.8×10 20  y (α) 1.123 180 Hf 185 W syn 75.1 d β ? 0.433 185 Re 186 W 28.43% >4.1×10 18  y (α) 1.656 182 Hf ( β ? β ? ) ? 186 Os
Decay modes in parentheses are predicted, but have not yet been observed

Wolfram ( Hon-ngi : ? w? ) he yit-chung fa-ho?k ngien-su , fa-ho?k fu-ho vi W , ngien-ch?? su-muk he 74 .

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