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Tungsten (W)
Atomic number 74 · transition
| Atomic number | 74 |
|---|---|
| Atomic mass | 183.84 u |
| Molar mass | 183.84 g/mol |
| Category | transition |
| Group / period / block | 6 / 6 / d |
| Electron configuration | [Xe] 4f14 5d4 6s2 |
| Electrons per shell | 2, 8, 18, 32, 12, 2 |
| Electronegativity (Pauling) | 1.7 |
| Atomic radius | 135.0 pm |
| Density | 19.3 g/cm³ |
| First ionisation energy | 7.864 eV |
| Melting point | 3687.15 K (3414.00 °C) |
| Boiling point | 5828.15 K (5555.00 °C) |
| Common oxidation states | +4, +6 |
| Abundance in Earth's crust | 1.25 ppm |
Uses
Bulb filaments, drill bits, hard tools
Discovery
1783, Fausto and Juan José de Elhuyar