Different diagrams of Atoms

The Octet Rule is the rule that says atoms combine in a way such that they have eight electrons in their valence shells. This rule could be especially used for Carbon, Nitrogen and Oxygen. This rule could also be applied to Fluorine, Chlorine, Bromine and Iodine. Also the meaning of the word octet is eight.

http://en.wikipedia.org/wiki/Octet_rule
http://dl.clackamas.cc.or.us/ch104-08/octet.html

The Bohr Model is when a atom positively charged nucleus surrounded by electrons travel in circular shapes around the nucleus.

Lewis Dot Diagram - The Lewis Dot Diagram consists of the elemental symbol which represents the nucleus of the atom. The Lewis Dot Diagram represents the number of electrons on the outside shell of an atom up to 8 electrons.