Cobalt is a chemical element
with symbol Co and it has an atomic number of 27. The
atomic weight of cobalt is 58.933195.
Things you might not know about
Cobalt:
1. Cobalt
compounds have been used for centuries to impart a rich blue color
to glass, glazes, and ceramics.
2. The word
cobalt is derived from the German kobalt, from kobold meaning
"goblin", a term used for the ore of cobalt by miners.
3. Lithium
cobalt oxide (LiCoO2) is widely used in lithium ion
battery cathodes.
4. Cobalt is
essential to all animals, including humans. It is a key constituent
of cobalamin, also known as vitamin B12. A deficiency of cobalt leads to
anemia, a lethal disorder.
See GC2XAY2 - Hydrogen, for an explanation
about this series of caches.