Cobalt

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Cobalt
Co
In situ availability:
Necessity:
Atomic number: 27
Atomic mass: 58.9332
group: 9
period: 4
normal phase: Solid
series: Transition Metals
density: 8.90 g/cm3
melting point: 1768K,
1495°C,
2723°F
boiling point: 3200K,
2927°C,
5301°F
N/A ← N/A → N/A
Fe ← Co → Ni
Ru ← Rh → Pd
Atomic radius (pm): 135
Bohr radius (pm): 152
Covalent radius (pm): 126
Van der Waals radius (pm):
ionic radius (pm): (+2) 65
1st ion potential (eV): 7.88
Electron Configuration
1s2
2s2 2p6
3s2 3p6 3d7
4s2
Electrons Per Shell
2, 8, 15, 2
Electronegativity: 1.88
Electron Affinity: 0.66
Oxidation states: 2, 3
Magnetism: Ferromagnetic
Crystal structure: Hexagonal

Cobalt is a Transition Metal in group 9. It has a Hexagonal crystalline structure. This element has a stable isotope of 59




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