Electron dot diagram for sodium and chlorine. The lewis structure indicates that each cl atom has three pairs of electrons that are not used in bonding. The symbol for chlorine is cl. The number of dots equals the number of valence electrons in the atom. A lewis electron dot diagram or electron dot diagram or a lewis diagram or a lewis structure is a representation of the valence electrons of an atom that uses dots around the symbol of the element.
Typically ionic lewis dot structures include the ionic charge so the na ion is labeled 1 and cl is labeled 1. From wikibooks open books for an open world. High school chemistrylewis electron dot diagrams. 1dot structure of sodium oxygen magnesium and chlorine.
For example when two chlorine atoms each with 7 valence electrons come together to form a diatomic chlorine molecule the lewis structure shows that there will be a sharing of two electrons between the two. To draw a lewis electron dot diagram for sodium you can picture the symbol for sodium in a box with the box having four sides. The lewis dot structure of nacl consists of a chloride ion surrounded by eight electron dots four pairs and a sodium ion bonded to that chlorine ion. Symbol for an element or monatomic ion that uses a dot to represent each valence electron in the element or ion lone pair two a pair of.
In an electron dot diagram this symbol represents the nucleus and the ten electrons in the first two energy levels. Mg 2 is the magnesium cation and o 2 is the oxide anion. We use lewis symbols to describe valence electron configurations of atoms and monatomic ions.