What is Platinum?

Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, malleable, ductile, precious, gray-white transition metal. Platinum is a member of the platinum group of elements and is known for its resistance to corrosion and tarnish. It has a variety of uses, including in jewelry, catalytic converters, electrical contacts, and laboratory equipment.

Physical and Chemical Properties of Platinum:

• Atomic number: 78
• Atomic mass: 195.08
• Physical state at room temperature: Solid
• Color: Gray-white
• Density: 21.45 grams per cubic centimeter
• Melting point: 1,768 degrees Celsius
• Boiling point: 3,825 degrees Celsius
• Chemical reactivity: Resistant to corrosion and tarnish

Uses of Platinum:

Platinum has a wide range of applications, including:

• Jewelry and decorative items
• Catalytic converters in automobiles
• Laboratory equipment, including crucibles and electrodes
• Medical devices
• Electrical contacts in electronic devices

Study Guide:

Here are some key points to remember when studying platinum:

1. What is the chemical symbol for platinum?
2. Describe the physical properties of platinum, including its color, density, melting point, and boiling point.
3. What is the primary use of platinum in the automotive industry?
4. Name two other common applications of platinum outside of jewelry.
5. Why is platinum considered a valuable and desirable metal?