27
58.933 u
Co
Cobalt
Transition Metal
Atomic Structure
Physical State
Group
9
Period
4
Block
d
Electron Configuration
[Ar] 3d⁷ 4s²
Physical Properties
Atomic Mass:
58.933 u
Electronegativity:
1.88
Atomic Radius:
192 pm
Ionization Energy:
7.881 eV
Density:
8.86 g/cm³
Melting Point:
1768 K
Boiling Point:
3200 K
Historical Information
Discovered By:
Georg Brandt
Year Discovered:
1735