Atomic number: 27

atomic mass: 58.933

Symbol: Co

Protons: 27

Electrons: 27

Neutrons: 31.933

Melting point: 1768 k

Group 9 period 4

Color: gray/charcoal

Boiling point: 3200 k

Density is 8.86 g

Cobalt

Discovered
By George
Bandt
In
1735 in
Swedan

Cobalt:

-has blue pigments
-sometimes found
in alloys in natural metal iron
-is a transitional element

Electron model:[ar] 4s2 3d7

http://m.youtube.com/watch?v=kRzLXhVSkA8