Kobalt (Co) - Nomero ya atomu 27. Ikintu cy'ibanze cyo ku rutonde rw'ibikoresho ku rugero rw'isanzure, gikoreshwa mu mishinga uhereye ku ibarura rya kwantumu ukageza ku bushakashatsi bw'ikirere. Uko kimeze mu bihe bisanzwe: ikinyabutabire gikomeye. Ingero zihari: kwantumu, nano, mikoro, gisanzwe, inganda, ikirere, inyenyeri.