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CobaltCo Electron 1 Electron 2 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 9 Electron 10 Electron 11 Electron 12 Electron 13 Electron 14 Electron 15 Electron 1 Electron 2

Cobalt is a chemical element with symbol Co and atomic number 27. Like nickel, cobalt in the Earth's crust is found only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.

27 Atomic Number
58.93 Atomic Mass (u)
1768.15 Melting Point (K)
3200 Boiling Point (K)
8.9 Density (solid: g/cm³, gas: g/liter)
1.7 Atomic Radius (Å)
1.26 Covalent Radius (Å)
1.88 Electronegativity
7.88 First Ionization Energy (eV)
63.9 Electron Affinity
4 Number of Shells
2, 8, 15, 2 Electron Shell Occupations
0.42 Specific Heat (J/g)