Cobalt
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Cobalt is a chemical element; it has symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of
Kobalt electrolytic and 1cm 3 cube
A block of electrolytically refined cobalt (99.9% purity) cut from a large plate
Cobalt tool tip
Cobalt(II) chloride hexahydrate
Nickel
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Nickel is a chemical element; it has symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chem
Cobalt
…Cobalt is a chemical element; it has symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free…
Nickel electrolytic and 1cm 3 cube
Electron micrograph of a Ni nanocrystal inside a single wall carbon nanotube; scale bar 5 nm
Widmanstätten pattern showing the two forms of nickel–iron, kamacite and taenite, in an octahedrite meteorite
![Color of various Ni(II) complexes in aqueous solution. From left to right, [Ni(NH3)6]2+, [Ni(NH2CH2CH2NH2)3]2+, [Ni(H2O)5Cl]+, [Ni(H2O)6]2+](https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Color_of_various_Ni%28II%29_complexes_in_aqueous_solution.jpg/500px-Color_of_various_Ni%28II%29_complexes_in_aqueous_solution.jpg)
Color of various Ni(II) complexes in aqueous solution. From left to right, [Ni(NH3)6]2+, [Ni(NH2CH2CH2NH2)3]2+, [Ni(H2O)5Cl]+, [Ni(H2O)6]2+