Deuterium in tungsten-based materials can be removed by isotope replacement and thermal desorption. Tungsten-based material is a kind of tungsten-based alloy material composed of other elements, which has the characteristics of high melting point, high hardness, and high sputtering threshold, and is widely used in the field of nuclear fusion energy.

The valence electron arrangement of tungsten does not follow hund's rules. Tungsten is one of the transition metal elements in the sixth period (second long period) of the periodic table of elements VIB group. Transition metal elements are obviously different from other elements because of their unfilled valence layer d orbitals based on the eighteen-electron rule.

Tungsten diiodide is a class of inorganic compounds with a black powdery appearance that has the following chemical properties.

Tungsten diiodide (chemical formula: WI₂) is a kind of inorganic compound formed by the reaction of tungsten and iodine, which has the following chemical properties.