Chromium is a lustrous, hard, steel-gray metal known for its high corrosion resistance and hardness. One of chromium’s most important applications is in the production of stainless steel, where it enhances corrosion resistance and adds hardness. It is also used in chrome plating to provide a shiny, protective coating for metals. Chromium compounds are used as pigments (notably chrome yellow and chrome green) and in the tanning of leather. Due to its durability and resistance to tarnishing, chromium is critical in aerospace, automotive, and manufacturing industries. As environmental concerns grow, research is focusing on reducing the use of harmful Cr(VI) compounds while promoting safer and sustainable alternatives.