Cobalt is a magnetic transition metal important in superalloys, rechargeable batteries, pigments, and vitamin B12.
Atomic number
27
Category
Transition metal
Period
4
Group
9
State
Solid
Fun facts about Cobalt
Vitamin B12 contains a cobalt ion.
Cobalt-based superalloys retain strength at high temperatures.
Cobalt compounds have coloured glass and ceramics blue for centuries.
Common uses of Cobalt
Battery cathodes
High-temperature superalloys
Blue pigments
Where Cobalt sits in the periodic table
Cobalt is classified as a transition metal in period 4 and group 9 of the periodic table. Under the conditions represented in this reference, its state is solid.
Quick chemistry revision
For quick revision, pair the symbol Co with atomic number 27 and the listed atomic mass 58.933. The summary, facts, and uses above keep those element properties together in one reference.