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Tungsten, 00 W Pronunciation / / (TUNG -stən ) Allotropes α-tungsteno (karaniwan), β-tungsteno Appearance grayish white, lustrous 183.84± 0.01 183.84± 0.01 (pinaikli)[1] [2]
Group 6 Period 6 Block d-blockElectron configuration [Xe ] 4f14 5d4 6s2 [3] Electrons per shell 2, 8, 18, 32, 12, 2 Phase at STP solid Melting point 3695 K (3422 °C, 6192 °F) Boiling point 5828 K (5555 °C, 10031 °F) Density (near r.t. ) 19.25 g/cm3 when liquid (at m.p. ) 17.6 g/cm3 Critical point 13892 K, MPa Heat of fusion 35.3 kJ/mol Heat of vaporization 806.7 kJ/mol Molar heat capacity 24.27 J/(mol·K) Vapor pressure
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
3477
3773
4137
4579
5127
5823
Oxidation states −4, −2, −1, 0, +1, +2, +3, +4 , +5, +6 (isang katamtamang asidikong oksido) Electronegativity Pauling scale: 2.36 Atomic radius empirical: 139 pm Covalent radius 162±7 pm Mga linyang espektral ng tungsten Crystal structure body-centered cubic (bcc) Thermal expansion 4.5 µm/(m⋅K) (at 25 °C) Thermal conductivity 173 W/(m⋅K) Electrical resistivity 52.8 n Ω⋅m (at 20 °C) Magnetic ordering paramagnetic [4] Young's modulus 411 GPa Shear modulus 161 GPa Bulk modulus 310 GPa Poisson ratio 0.28 Mohs hardness 7.5 Vickers hardness 3430 MPa Brinell hardness 2570 MPa CAS Number 7440-33-7 Symbol "W": mula sa Wolfram , orihinal mula sa Gitnang Mataas na Aleman na wolf-rahm 'bula ng lobo' na sinasalarawan ang mineral na wolpramita[5] Template:infobox tungsten isotopes does not exist Kategorya: Tungsten | references
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↑ "Standard Atomic Weights: Tungsten" (sa wikang Ingles). CIAAW. 1991.{{cite web }}
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↑ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)" . Pure and Applied Chemistry (sa wikang Ingles). doi :10.1515/pac-2019-0603 . ISSN 1365-3075 . {{cite journal }}
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↑ Berger, Dan. "Why does Tungsten not 'Kick' up an electron from the s sublevel ?" . Bluffton College, USA.
↑ Magnetic susceptibility of the elements and inorganic compounds , in Handbook of Chemistry and Physics 81st edition, CRC press.
↑ van der Krogt, Peter. "Wolframium Wolfram Tungsten" (sa wikang Ingles). Elementymology& Elements Multidict. Inarkibo mula sa ang orihinal noong 2010-01-23. Nakuha noong 2010-03-11 . {{cite web }}
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↑ "Why does Tungsten not 'Kick' up an electron from the s sublevel ?" . Nakuha noong 2008-06-15 .{{cite web }}
: CS1 maint: date auto-translated (link )