Answer:
Ruthenium.
Rhodium.
Palladium.
Silver.
Osmium.
Iridium.
Platinum.
Gold.
Explanation: Noble metal, any of several metallic chemical elements that have outstanding resistance to oxidation, even at high temperatures; the grouping is not strictly defined but usually is considered to include rhenium, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, and gold.
