Symbol | W | Atomic radius: pm | 137 | Fusion: kJ/Mole | 52.31 |
Name | Tungsten | Ionic radius: pm | (+6)60 | Boiling point: °C | 5555 |
Atomic number | 74 | Electron affinity | 0.86 | Melting point: °C | 3422 |
Atomic weight | 183.8 | 1st ion potential | 7.98 | Specific Heat Cap: J/(g K) | 0.13 |
Classification | Trans metal | Natural form | Solid | Thermal Cond: W/(cm K) | 1.74 |
Configuration | [Xe]4f145d46s2 | Crystal structure | BCC | Electrical Cond | 0.189 |
Oxidation states | 6,5,4,3,2 | Density | 19.3 | Abundance: mg/kg-crust | 1.3 |
Electronegativity | 1.7 | Vaporization: kJ/Mole | 799.1 | ||
In 1781, the Swedish chemist, Carl Scheele discovered tungsten acid, and Torbern Bergman concluded that a new metal could be prepared from the acid.Tungsten metal was first isolated in 1783 by the Spanish chemist and mineralogist brothers Juan José and Fausto Elhuyar. W stands for "Wolfram". | Uses - drill bits, light bulb wire, electrical contacts, x-ray targets, windings and heating elements for electrical furnaces |