Because they don't react with other elements.
These metals (especially platinum and gold) are less chemically reactive.
Noble metals are called platinic metals (platinum, palladium, rhodium, osmium, iridium, ruthenium) and also gold and silver.
no
8 noble metals are: gold silver palladium iridium platinum rhodium ruthenium osmium some add: rhenium
Noble metals have chemical similarity to noble gases, so they are resistant. Gold and platinum are the hardest to oxidize, by the highest potentials in electromotive series
Sodium hydroxide solution will not react with platinum or gold. Platinum and gold are noble metals that are resistant to corrosion by most chemicals, including sodium hydroxide.
Gold and platinum are both considered noble metals because they are resistant to oxidation and corrosion, making them relatively unreactive compared to other metals. However, platinum can react with certain strong oxidizing agents under extreme conditions. Gold, on the other hand, is highly unreactive and does not tarnish or corrode easily.
Noble metals are a group of metals that are resistant to corrosion and oxidation in moist air, making them valuable for use in jewelry and other high-end applications. The most commonly recognized noble metals are gold, silver, and platinum. They are characterized by their luster, ductility, and ability to conduct electricity well.
The noble metals are a group of metals that resist oxidation and corrosion in moist air. They are the opposite of the base metals, which more readily oxidize and corrode. Some of the noble metals are gold, platinum, and iridium. Aside from being corrosion resistant, they are also very expensive.
gold, silver, platinum
No. Aqua regia is used to dissolve noble metals: gold and platinum. It does not affect diamond.
Noble metals, such as gold, silver, and platinum, are generally not magnetic. They exhibit weak magnetic properties, but they do not possess significant ferromagnetism like iron or cobalt. Some noble metals can show paramagnetism under specific conditions, but this is not a defining characteristic. Overall, noble metals are primarily considered non-magnetic.