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Co

Cobalt

#27 · Transition Metal

Mass58.933 u
Density8.9 g/cm³
Melting1768.0 K
Boiling3200.0 K
Electronegativity1.88
Ionization Energy760.4 kJ/mol
Atomic Radius125.0 pm
Blockd-block
State (RT)Solid
Config[Ar] 3d7 4s2
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