![]() ![]() A few stable compounds of the 5, 4, and 1 states, however, are known. ![]() They readily form alloys and lose electrons to form stable cations. The most common oxidation states of chromium are 6, 3, and 2. ![]() They are almost all hard, high-melting solids that conduct heat and electricity well. Increasing the supply of lanthanoid elements is one of the most significant challenges facing the industries that rely on the optical and magnetic properties of these materials. Hexavalent chromium is chromium in any chemical compound that contains the element in the 6 oxidation state (thus hexavalent). In 2008, dysprosium cost $110/kg by 2014, the price had increased to $470/kg. A computer hard drive is shown with a metallic component highlighted in a red circle.Īs the demand for lanthanide materials has increased faster than supply, prices have also increased. Closeup of a flat screen shows the many individual pixels which are red green and blue in color. (credit b: modification of work by “KUERT Datenrettung”/Flickr) A. (b) Neodymium magnets are commonly found in computer hard drives. Hexavalent chromium, or chromium-6, is the cancer-causing chemical that poisoned the community of Hinkley, Calif. \): (a) Europium is used in display screens for televisions, computer monitors, and cell phones. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |