cobalt

http://en.wikipedia.org/wiki/Cobalt http://www.periodictable.com/Elements/027/index.html http://www.lenntech.com/Periodic-chart-elements/Co-en.htm http://www.encyclopedia.com/doc/1E1-cobalt.html http://www.youtube.com/watch?v=RxONc5Zd8tM A solution of cobalt sulfate is added to different other solutions. Complexes are formed. http://www.youtube.com/watch?v=wm6Oc1QlFYs
 * Element Name (2 pts)** - Cobalt
 * Element Symbol(2 pts)** - Co
 * Atomic Number (2 pts)** - 27
 * Most Common Mass Number (2pts)** - 58.9332
 * Physical State at Room Temperature (2 pts)** - Solid
 * Meaning of the Element's Name or Latin/Greek Name (5 pts)** - the word cobalt is derived from the German kobalt, from kobold(evil spirit) meaning "goblin", a term used for the ore of cobalt by miners
 * Uses of the Element (5 pts)** - Cobalt compounds have been used for centuries to impart a rich blue color to glass, glazes, and ceramics.
 * Biological Importance of the Element (5 pts)** cobalt in small amounts is essental to many living organisms, including himans. It is a central component of the vitamin cobalamin, or vitamin B.
 * Who Discovered the Element (5 pts)** -swedish chemist George Brandt (1694-1768)
 * How the Element was Discovered (5 pts)** - George Brandt is credited with isolating cobalt in 1735. He was able to show that cobat was the cource of the blue color in glass, which previously had been attributed to the bismuth found wtih cobalt.
 * Physical Properties of the Element (5 pts)** - cobalt is a brittle, hard metal, resembling iron and nickel in appearance. it tends to exist as a mixture of 2 allotropes over a wide temperature range. In the solid state, the metal has a hexagonal closest packed structure
 * Chemical Properties of the Element (5 pts)** - Cobalt has a melting point of 1495°C, boiling point of 2870°C, specific gravity of 8.9 (20°C), with a valence of 2 or 3. It has a metallic permeability of about 2/3 that of iron.
 * Common Compounds of the Element, if any (5 pts)** - Cerulean, cobalt blue, cobamamide, Hexol, vitamin B12...etc
 * Common Ions of the Element, if any (5 pts)** - pink hexaaquacobalt(II) ion - [Co(H2O)6]2+
 * Isotopes of the Element, if any (5 pts)** - cobalt-60, cobalt-57, cobalt-59
 * At least 2 Pictures of the Element in Some Form (5 pts each)**
 * At least 1 link to another element's page. (5 pts)** carbon at http://chemistry.about.com/od/elementfacts/a/carbon.htm
 * For extra credit, you may include a video about your element. You can create it yourself or add it from the internet as long as you cite your source. (10 pts EC)**
 * If you add more info than is required above, you will get extra credit. (5 pts EC)**