Element Cobalt (Co)

Atomic number 27 · transition metal · Atomic mass 58.933 u

Atomic Mass
58.9330 u
Element Properties
Atomic Number 27
Atomic Mass 58.9330 u
Category transition metal / 过渡金属
Group 9
Period 4
Block D
Electron Configuration [Ar] 3d⁷ 4s²
Electronegativity (Pauling) 1.88
Phase at STP Solid
Density 8.9 g/cm³
Year Discovered 1735

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