Lewi Dot Diagram

Drawing Electron Dot Diagram:    -the nucleus is represented by the atomic symbol
                                                        -determine the number of valence electrons
                                                        -electrons are represented by dots around the symbol
                                                        -max. electrons each orbital can hold goes 2,8,8...
Example:                                                             Lithium

-in covalent compounds electrons are shared

      Determine the number of valence electron for each atom in the molecule.

      Place atoms so that valence electron are shred to fill each orbital.

-in ionic compounds electrons transfer from one element to another
      Determine the number of valence electrons on each ions
      Put brackets around the metal and non-metal
      Write the charge at the top right of the brackets


-Stanley K.