http://upload.wikimedia.org/wikipedia/commons/thumb/d/db/Electron_shell_019_Potassium.svg/558px-Electron_shell_019_Potassium.svg.png Search this link. There is a picture.
One bond and 6 unpaired electrons around fluroine.
Potassium nitrate is solid state of matter. and look like as shown in the figure. I've added a diagram for your easiness
Potassium nitrate is white.
A shell model is an electron configuration. The shell model for Potassium has two electrons on the first ring, eight on the second ring, eight on the third ring, and one on the fourth ring.
A diagram which looks like a sankey diagram A diagram which looks like a sankey diagram
Potassium bromide is a White solid
this is the plant leaf diagram.
The orbital diagram for MAgnesium is
look like an octopus look like an octopus
Swag
Electrons shown in an electron dot diagram are the valence electrons. As a "for instance" here, look at hydrogen and lithium. Each one has a single electron in their outer most or valence shell, and so each will be shown by writing the chemical symbol and by adding a single dot. H. Li.
Lithium and potassium have only one valence electron each. A valence electron is an unpaired electron available for bonding with other elements. Since lithium and potassium have only one valence electron each, they are pretty stable elements that don't do a lot of bonding.