The electronic configuration for tungsten is [Xe] 6s2 4f14 5d4. In the periodic table, it belongs to period 6 and group 6. The element has five stable isotopes and twelve known unstable isotopes.
Tungsten, a solid at room temperature, has an atomic weight of 183.84 and density of 19.3 grams per cubic centimeter. It melts at around 3410 degrees Celsius and boils at 5660 degrees Celsius. This transition metal and its alloys are used to manufacture filaments for electric bulbs and television tubes. It is also used for glass or metal seals because of its thermal expansion properties. Its sources include wolframite, ferberite and scheelite.