cobalt

Atomic number: 27
Atomic weight: 58.9332
Symbol: Co
Group number: 9
Electronic configuration: [Ar].3d⁷.4s²

Physical data

Standard state: solid at 298 K
Colour: lustrous, metallic, greyish tinge
Density of solid at ambient temperature/kg m-3: 8900
Molar volume/cm3: 6.67

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