Potassium's atomic number is 19, which is the number of protons in the nucleus. In a neutral atom, the number of protons also equals the number of electrons. So a neutral potassium atom has 19 electrons. It has a positive charge. A common form is a monatomic ion.
See the Electron Configuration of Atoms of the Elements
The combination of graphene nanoribbons made with a process developed at Rice University and a common polymer could someday be of critical importance to healing damaged spinal cords in people, according to Rice chemist James .
Simple fruit for today's theme as I believe there will be loads of potassium (Atomic Symbol K and Atomic Number 19) within. I think I have missed my symbols from Sunday and Monday, so will sort that soon!! My technique today is quite alien to me ~ I http://figue-de-barbarie.blogspot.co.at/2013/08/la-figue-de-barbarie-un-remede-miracle.html
Zurich, Switzerland (SPX) Nov 2014 - Graphene is the miracle material of the future. Consisting of a single layer of carbon atoms arranged in a honeycomb lattice, the material is extremely stable, flexible, highly conductive and of par