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Tungsten
Chemical element, symbol W and atomic number 74
This article is about the chemical element. For other uses, see Tungsten (disambiguation).
Chemical element with atomic number 74 (W)
| Pronunciation | (TUNG-stən) |
|---|---|
| Alternative name | Wolfram, pronounced: (WUUL-frəm) |
| Allotropes | α-tungsten (common), β-tungsten |
| Appearance | Grayish white, lustrous |
| Atomic number(Z) | 74 |
| Group | group 6 |
| Period | period 6 |
| Block | d-block |
| Electron configuration | [Xe] 4f14 5d4 6s2[3] |
| Electrons per shell | 2, 8, 18, 32, 12, 2 |
| Phaseat STP | solid |
| Melting point | 3695 K (3422 °C, 6192 °F) |
| Boiling point | 6203 K (5930 °C, 10706 °F) |
| Density (at 20° C) | 19.254 g/cm3 [4] |
| when liquid (at m.p.) | 17.6 g/cm3 |
| Heat of fusion | 52.31 kJ/mol[5][6] |
| Heat of vaporization | 774 kJ/mol |
Molar heat capacity
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