Cr

1. Introduce – Chromium is a silvery-white metal with excellent luster and high corrosion resistance – Its name derives from the Greek word “chroma” because its compounds exhibit a variety of deep colors – It is relatively reactive and does not occur as a free element in nature – It reacts with oxygen to form a dense oxide layer (Cr₂O₃), which prevents corrosion – Due to its excellent corrosion and oxidation resistance, it is widely used as a plating and alloying element – Cr acts as a primary alloying element in stainless steel, and corrosion resistance is ...