1. Lewis Dot Structure

2.  Predicts Molecular Structure (Shape)  Looks at Central Atom of the Compound  # Electron pairs,  Bonded  Non-Bonded  Electrons Repel Each Other  Maximize distance between each other

3. BeF 2 Be F F F Let’s Try to make the atom stable by using the Octet Rule – Outer Level 2 or 8 BeF F Why Is the Compound Linear in Shape? 2 Electrons in the outer shell 7 Electrons in the outer shell

4. FBeF Two bonded pairs don’t like each other (repel)

5. BCl 3 B B Cl Let’s Try to make the atom stable by using the Octet Rule – Outer Level 2 or 8 3 Electrons in the outer shell 7 Electrons in the outer shell Cl B

6. B What is the Shape? 3 shared pairs of electrons Triangle Shape – Trigonal Planar B Cl Triangle has three vertexes

7. CH 4 C H C Let’s Try to make the atom stable by using the Octet Rule – Outer Level 2 or 8 4 Electrons in the outer shell 1 Electrons in the outer shell H H H H CH H H H

8. What is the Shape? 4 shared pairs of electrons 3-D 4 sided figure - Tetrahedral Square has four corners CH H H H C H H H H

9. H2OH2O H H O H Let’s Try to make the atom stable by using the Octet Rule – Outer Level 2 or 8 O 1 Electrons in the outer shell 6 Electrons in the outer shell O H H

10. 4 pair of electrons O H H What is the Molecules Shape? Special Tetrahedral Bent O HH Tetrahedral Rule: Opposites attract Likes repel 2 shared electron pairs 2 Unshared Electron Pairs

11.  3 pair of shared  1 pair of unshared N H H H Trigonal-Pyramidal

13. SF 2 PCl 3 SO 2 Linear Trigonal-Pyramidal Bent Trigonal-Planar Tetrahedal

14.  http://wps.prenhall.com/esm_brown_chemistr y_9/2/667/170888.cw/index.html http://wps.prenhall.com/esm_brown_chemistr y_9/2/667/170888.cw/index.html More Review  http://www.mhhe.com/physsci/chemistry/cha ng7/esp/folder_structure/bo/m3/s3/index.ht m http://www.mhhe.com/physsci/chemistry/cha ng7/esp/folder_structure/bo/m3/s3/index.ht m