Stainless steel contains iron and : — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

Step 1: Stainless steel is a steel alloy designed to have high corrosion resistance. Step 2: To achieve this resistance, steel is alloyed with a minimum of about 10.5% chromium (Cr). Step 3: The chromium reacts with oxygen in the air to form a thin, protective passive layer of chromium oxide on the surface. Thus, stainless steel contains iron and chromium, corresponding to option (d).