Definitionn. a hard ferromagnetic silver-white bivalent or trivalent metallic element
Last update: October 29, 2015
2
Cobalt is a hard silvery white metal. [Please select]
0
Three characteristic oxides of cobalt are known, the monoxide, CoO, the sesquioxide, C0203, and tricobalt tetroxide, C0304; besides these there are probably oxides of composition Co02, Co 8 0 9, C0607 and C0405. [Please select]
0
It is the source of a considerable supply of nickel and cobalt. [Please select]
0
That means the cobalt has not been properly ground or sifted. [Please select]
0
, by reduction with hydrogen or water-gas in the presence of finely divided nickel, cobalt or iron. [Please select]