Electronic Structure ( Electron Dot Diagrams)

Drawing Electron Dot Diagrams
- The nucleus is represented by the atomic symbol
- For individual elements determine the number of valence electrons
- Electrons are represented by dots around teh symbol
- Four orbitals (one of each side of the nucleus) each holding a maximum of 2e-
- Each orbital gets 1e- before they pair up



Lewis Diagrams for Compounds & Ions
- In covalent compounds electrons are shared
1) Determine the # of valence e- for each atom in the molecule
2) Place atoms so that valence electrons are shared to fill each orbital

Ionic Compounds
- In ionic compounds electrons transfer from one element to another
1) Determine the # of valence electrons on the cation (+)
2) Move these to the anion (-)
3) Draw [ ] around the metal and non-metal
4) Write the Changes

- JanCarlo Paysan