Nobel Metal

Noble metals are metals that do not react easily with other elements. They are known for their resistance to corrosion and oxidation, even in harsh environments. Noble metals are found in their pure form (elemental state) in nature. They are less likely to form compounds due to their low reactivity.

Gold that is 100 percent pure is called 24-carat gold. Pure gold is soft. As a result, ornaments made from pure gold bend or break due to pressure. Therefore, goldsmiths mix it with a certain proportion of copper or silver. Ornaments are made from 22-carat gold or gold with a lower carat value.

Examples: The most common noble metals include:

• Gold
• Silver
• Platinum
• Palladium
• Rhodium

1. Jewellery and Ornaments

Gold, Silver, and Platinum: These metals are widely used to make ornaments and jewellery because of their attractive appearance, shine, and durability. They are also resistant to tarnishing and corrosion, which makes them ideal for long-lasting decorative pieces.

2. Medicinal Use

Silver: It has antibacterial properties and is used in medicines to help fight infections. For example, silver is used in wound dressings and certain medical devices to prevent bacterial growth.

3. Medals and Awards

Gold and Silver: These metals are used to make medals and trophies for awards and honours. Their value and rarity make them a symbol of achievement and prestige.

4. Electronic Devices

Gold and Silver: These metals are excellent conductors of electricity and are used to make components in electronic devices. Gold, for example, is used in connectors, circuit boards, and small electronic contacts due to its conductivity and resistance to corrosion.

5. Catalysts in Chemical Reactions

Platinum and Palladium: These noble metals are used as catalysts in various chemical processes. A catalyst is a substance that speeds up a chemical reaction without being consumed. For example, platinum is used in car catalytic converters to reduce harmful emissions.