Any process of chemical decay of metals due to action of the surrounding medium is called?

Explanation

It refers to the gradual degradation of metals through a chemical reaction with the surrounding environment. This reaction often involves the formation of oxides or other compounds on the metal surface, leading to a loss of material and structural integrity. Corrosion is a natural process that can occur due to exposure to moisture, air, acids, or other corrosive substances.Some examples: 1. Rusting of iron: This is the most familiar example, where iron reacts with oxygen and water in the atmosphere to form a reddish-brown oxide, Fe₂O₃.Equation: 4Fe(s) + 3O₂(g) + 6H₂O(l) → 4Fe₂O₃(s) + 6H₂(g)2. Tarnishing of silver: When exposed to air containing sulfur compounds, silver forms a black sulfide layer, Ag₂S.Equation: 2Ag(s) + H₂S(g) → Ag₂S(s) + H₂(g)3. Patina on copper: While often considered aesthetically pleasing, the green patina on copper is also a form of corrosion, resulting from the formation of copper carbonates and chlorides.Equation (simplified): Cu(s) + CO₂(g) + Cl₂(g) + H₂O(l) → CuCO₃(s) + CuCl₂(s)