Noble Metals
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A noble metal is a classification of metals that are known for their resistance to corrosion and oxidation in moist or aggressive environments. These metals have a high level of stability and do not easily react with other elements or substances. The term "noble" is derived from the concept of nobility, indicating the metals' resistance to degradation. Noble metals are often highly valued for their use in various applications, including jewelry, currency, and industrial processes.
Common noble metals include:
(Au): Gold is one of the most well-known noble metals and is prized for its luster, malleability, and resistance to tarnish and corrosion. It is widely used in jewelry, currency, and electronics.
(Ag): Silver is another widely recognized noble metal known for its shiny appearance, electrical conductivity, and resistance to corrosion. It is used in jewelry, coins, tableware, and photography.
(Pt): Platinum is a dense and durable noble metal known for its resistance to corrosion, making it valuable in jewelry, catalytic converters, and the chemical industry.
(Pd): Palladium shares many properties with platinum and is also a noble metal used in catalytic converters, electronics, and jewelry.
Rhodium (Rh): Rhodium is highly reflective and resistant to corrosion. It is commonly used as a plating material on jewelry and in catalytic converters.
Ruthenium (Ru): Ruthenium is a rare and dense noble metal used in electrical contacts, catalysts, and some jewelry.
Iridium (Ir): Iridium is one of the densest elements and is highly resistant to corrosion. It is used in electrical contacts, spark plugs, and scientific instruments.
These noble metals are valued not only for their resistance to corrosion but also for their aesthetic appeal, electrical conductivity, and catalytic properties. Their unique characteristics make them important in a wide range of applications in various industries.
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