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Cobalt

Chemical symbol: Co

Atomic number: 27

Atomic mass: 58.933

Group: 9

Period: 4

Element category: Transition metals

Block: d-block

Number of protons: 27

Number of electrons: 27

Number of neutrons (in the most common isotope): 32

Sources:

  • Knowledge Encyclopedia (book)

  • SCIENCIA (book)

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