Platinum: An Overview

Platinum is a precious metal with the atomic number 78 and symbol Pt on the periodic table. It is known for its silvery-white luster and is one of the rarest elements in the Earth's crust. Platinum is highly valued for its use in jewelry, catalytic converters, and various industrial applications.

Physical Properties of Platinum

• Atomic Number: 78
• Atomic Mass: 195.08
• Density: 21.45 g/cm3
• Melting Point: 1,768.3°C
• Boiling Point: 3,825°C

Chemical Properties of Platinum

Platinum is a transition metal and is known for its resistance to corrosion. It does not readily react with oxygen or water, making it highly stable in various environmental conditions. Platinum also has a high melting point and is a good conductor of electricity.

Uses of Platinum

Platinum has a wide range of applications, including:

• Manufacture of jewelry and ornaments
• Catalytic converters in vehicles to reduce emissions
• Chemical and petroleum refining
• Electronics and electrical contacts
• Medical and dental equipment

Study Guide

When studying platinum, it's important to focus on its physical and chemical properties, as well as its various uses in industry and everyday life. Here are some key points to cover:

1. Describe the physical properties of platinum, including its atomic number, mass, density, and melting point.
2. Explain the chemical properties of platinum and its resistance to corrosion.
3. Discuss the uses of platinum in different industries and technologies.
4. Explore the historical significance of platinum and its cultural importance.
5. Compare and contrast platinum with other precious metals, such as gold and silver.

By understanding the unique properties and versatile applications of platinum, students can gain a deeper appreciation for this valuable element.