Noble metals are metals that are resistant to corrosion and oxidation in moist air, unlike most base metals. Which of the following are noble metals? (choose all that apply):

Noble metals are resistant to corrosion and oxidation in moist air. The traditional noble metals are ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, and gold. Copper corrodes and tarnishes readily (forming copper oxide and carbonate), while mercury is liquid at room temperature and forms oxides, so neither qualifies as noble.