CrO4^2-
The chromate ion, represented as CrO4^2-, is a polyatomic ion consisting of one chromium atom bonded to four oxygen atoms. It carries a negative two charge, which means it has two more electrons than protons. This ion is commonly found in various chemical compounds and is known for its bright yellow color in solution.
CrO4^2- is often used in analytical chemistry and industrial applications, such as in the production of pigments and in the synthesis of other chromium compounds. It can also act as an oxidizing agent in chemical reactions, making it important in both laboratory and industrial processes.