Number of Energy Levels: 4
Electrons on the outer energy level: 2
Atomic number: 27
Atomic Mass: 58.9332 Amu (Atomic Mass Units)
Density: 8.9 g/cm3
Classification: Transition Metal
Cobalt was discovered in 1737 by George Brandt. Its name derives from German word "kobold" which means "evil spirit". Cobalt’s melting point is at 1495.0 °C (1768.15 K, 2723.0 °F) and boiling point at 2870.0 °C (3143.15 K, 5198.0 °F).
Top 7 interesting facts about cobalt
Elemental cobalt is hard and silver/grey metal.
Cobalt occurs naturally only in chemical compounds.
Cobalt is primary used in producing magnetic high-strength alloys.
Cobalt blue is used in jewelry, paint, and glass and ceramic industries.
Congo and Zambia are the largest producers of cobalt in the world.
Cobalt has eight important isotopes, 59-Co is the only one stable isotope and 60-Co is a very important radioisotope.
Cobalt is an essential element in vitamin B-12 and an important nutrient for bacteria.