Platinum

Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, malleable, and ductile metal that is highly valued for its resistance to corrosion and its use in jewelry, catalytic converters, and various industrial applications.

Here are some key points to remember about platinum:

• Symbol: Pt
• Atomic Number: 78
• Category: Transition metal
• Color: Silvery-white
• Density: 21.45 grams per cubic centimeter
• Melting Point: 1,768 degrees Celsius
• Boiling Point: 3,825 degrees Celsius

Properties of Platinum

Platinum has several unique properties that make it valuable in various applications:

• Corrosion Resistance: Platinum is highly resistant to corrosion, making it ideal for use in jewelry and in industrial processes that involve harsh chemical environments.
• Catalytic Properties: Platinum is a catalyst for several chemical reactions, including the conversion of harmful pollutants in automobile exhaust into less harmful substances.
• Malleability and Ductility: Platinum can be easily shaped and formed into various objects, making it useful in jewelry making and other manufacturing processes.
• High Melting Point: Platinum has a high melting point, which makes it suitable for use in high-temperature applications, such as in the production of glass and in the aerospace industry.

Uses of Platinum

Platinum has a wide range of uses in various industries:

• Jewelry: Platinum is popular for making high-quality jewelry due to its luster, durability, and resistance to tarnishing.
• Catalytic Converters: Platinum is a key component in catalytic converters used in automobiles to reduce harmful emissions from exhaust gases.
• Electronics: Platinum is used in the production of electronic components, such as hard disk platters and thermocouple elements.
• Chemical Processing: Platinum catalysts are used in the production of chemicals, pharmaceuticals, and petroleum refining processes.

Study Guide

Here are some key points to remember when studying platinum:

1. What is the symbol and atomic number of platinum?
2. What are the properties of platinum that make it valuable in various applications?
3. What are the main uses of platinum in industry and everyday life?
4. Why is platinum considered a valuable metal for jewelry making?
5. How is platinum used in catalytic converters, and why is it important for environmental protection?

Understanding the properties and uses of platinum is essential for grasping its significance in industry, technology, and everyday life.