Lewis Dot Structure.  Predicts Molecular Structure (Shape)  Looks at Central Atom of the Compound  # Electron pairs,  Bonded  Non-Bonded  Electrons.

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Presentation transcript:

Lewis Dot Structure

 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

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

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

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

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

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

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

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

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

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

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

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