The correct answer is option 1. Gold.
Corrosion is the natural and biological process that transforms pure metal into its oxides, hydrides, or sulfides. A metal corrodes when it comes into touch with air and water because of its high reactivity. Corrosion occurs more quickly in the highly reactive metal than in the low reactive metal. In general, noble metals with low corrosion potential include Ruthenium (Ru), Rhodium (Rh), Palladium (Pd), Silver (Ag), Osmium (Os), Iridium (Ir), Platinum (Pt), and Gold (Au). |
