High Quality Content by WIKIPEDIA articles! Chromium hydride is a chemical compound of chromium and hydrogen. It can take form as a gas that has reactive two-atom molecules with formula CrH. It is found as a gas naturally in cooler stars, and in cooler places on the Sun in sunspots. It can also occur as a dull brown or dark grey solid in two different crystalline forms: face centred cubic with formula CrH2 or a close packed hexagonal solid with formula CrH. Chromium hydride is important in chrome plating, being an intermediate in the formation of the chromium plate.