Cobalt

Cobalt is a chemical element with the symbol Co and atomic number 27. It is a hard, lustrous, silver-gray metal that is commonly found in minerals such as cobaltite, erythrite, and skutterudite.

Properties of Cobalt:

• Atomic number: 27
• Symbol: Co
• Color: Silver-gray
• Hardness: Relatively hard
• Magnetic: It is ferromagnetic

Uses of Cobalt:

Cobalt has various industrial and commercial uses, including:

1. Alloys: Cobalt is used to make high-strength alloys for jet engines and gas turbines.
2. Batteries: It is a key component in the production of lithium-ion batteries.
3. Pigments: Cobalt compounds are used to produce blue and green pigments for ceramics, glass, and paint.
4. Catalysts: It is used as a catalyst in the production of chemicals and petroleum refining.

Health and Environmental Effects:

Cobalt is an essential element for humans in small amounts, but prolonged exposure to high levels of cobalt can lead to lung and heart problems. Proper handling and disposal of cobalt-containing materials are necessary to prevent environmental contamination.

Study Guide Questions:

1. What is the symbol and atomic number of cobalt?
2. What are the primary uses of cobalt in industry?
3. How is cobalt used in the production of pigments?
4. What are the potential health effects of prolonged exposure to high levels of cobalt?