Chromium is the first member of Group 6 of the periodic table, and it is denoted by the symbol Cr. The element's source is the earth's crust, which is rigid, shiny, and hard. Chromium is derived ...

Sodium selenite (Na 2 SeO 3) is a toxic inorganic salt that is highly soluble in water and insoluble in organic solvents. The crystal structure of the anhydrous salt has been variously reported as ...