Cobalt (Co) Properties and Facts

Element 27 - Transition Metal

What are the basic properties of Cobalt?

Cobalt (symbol: Co) is a transition metal with atomic number 27. Its atomic mass is 58.933 u, and it belongs to period 4 and group 9.

What is the electron configuration of Cobalt?

The electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁷ 4s²

What are the physical properties of Cobalt?

Melting point: 1768.0 K
Boiling point: 3200.0 K
Density: 8.9 g/cm³

What are the known isotopes of Cobalt?

  • Co-59: 100.0% abundance

What is the biological role and occurrence of Cobalt?

Biological role: Essential component of vitamin B12
Natural occurrence: Found in cobaltite and other minerals

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