Cobalt
by Yogi P - October 22, 2023
Cobalt: A Useful Element
Cobalt is an important element in the earth’s crust, and is used in a variety of everyday objects and applications. Cobalt is a navy-blue metal, and is known for its strength, stability, and resistance to tarnishing.
Its uses range from industry to everyday life, with a variety of applications from coins, magnets, batteries, and many more.
History and Discovery of Cobalt
Cobalt was discovered in 1735 by the Swedish chemist, George Brandt. Its first use was in Egypt during the 18th century, as a coloring agent for glass, enamel, and pottery.
Properties of Cobalt
- Atomic number : 27
- Symbol : Co
- Atomic mass : 58.933195 g·mol−1
- Melting point : 1495 °C
- Boiling point : 2870 °C
- Density : 8.90 g/cm³
- Valence electrons : 2,3,4,5,6
Uses of Cobalt
Cobalt is used for many different applications, some of which include:
| Application | Description |
|---|---|
| Metal Alloys | Cobalt is used to add strength and corrosion resistance to steel and iron-based alloys, as well as to alloy bronze, brass, and other metals. |
| Magnetic Alloys | Cobalt is often combined with iron, copper, or nickel, to create a powerful magnetic alloy commonly used to make electric motors and other electrical components. |
| Electronics | Cobalt is often used in electronics, especially electric current transistors, as it has high-temperature thermal conductivity. |
| Coinage | Cobalt has been used to create coins due to its ability to form highly durable alloys with other metals. |
| Pigments and Dyes | Cobalt has been used to make pigments and dyes for thousands of years. It is used to create intense, deep blues and greens, as well as deep purples. |
Safety Precautions
Cobalt is generally safe to handle when it is in solid form. However, it is important to take safety precautions when working with the metal, as it releases an uncommonly high amount of radiation.
Additionally, long-term exposure to cobalt can lead to respiratory problems, so it is important to work in well-ventilated areas and to wear protective clothing and masks.
Conclusion
Cobalt is an important element with many practical applications, ranging from industry to everyday life. Its numerous uses include alloys, magnets, coins, pigments, and electronics. Taking the necessary safety precautions while handling cobalt is important, as long-term exposure can lead to respiratory problems.
In conclusion, Cobalt is valuable and useful element, which continues to be used and implemented in a variety of scenarios.
