CoZ =  27

From the German "Kobold", meaning "evil spirit"
(AM) Atomic Mass 58.9332  amu    Oxidation States +2, +3
   (BP) Boiling Point 2870  °C    (MP) Melting Point 1495  °C
   (ρ) Density 8.83  g/cm3    Crystal Structure Hexagonal
   ( χ ) Electronegativity 1.8    (AR) Atomic Radius 1.26  Å
   Physical State Solid (C) Heat Capacity 0.421  J/g °C
Electronic-Config [Ar]  3d7  4s2     (I1) First Ionization E 758.37  kJ/mol
   (ΔHvap) Heat of Vaporization 377  kJ/mol     (ΔHfus) Heat of Fusion 16.06  kJ/mol
   Year of Discovery 1751    Location of Discovery Sweden
(E°) Standard Potential Co2+⇔ Co (-0.280 V),   Co3+⇔ Co2+ (1.820 V)
Stable isotopes  59Co
Discovered/Synthesized by Georg Brandt
Natural Source The mineral/ore cobaltite
Common Uses Hard strong steel, cutting tools, turbines, magnets, blue glass and ceramics
Other Info One of the rarest transition metals and an essential ingredient of vitamin B12
Essential ingredient of Vitamin B-12
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