1 Linear Electronic Geometry: AB 2 Species (No Lone Pairs of Electrons on A) Some examples of molecules with this geometry are: BeCl 2, BeBr 2, BeI 2,

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Presentation transcript:

1 Linear Electronic Geometry: AB 2 Species (No Lone Pairs of Electrons on A) Some examples of molecules with this geometry are: BeCl 2, BeBr 2, BeI 2, HgCl 2, CdCl 2 All of these examples are linear, nonpolar molecules. Important exceptions occur when the two substituents are not the same! BeClBr or BeIBr will be linear and polar!

2 Linear Electronic Geometry: AB 2 Species (No Lone Pairs of Electrons on A) Electronic Geometry

3 Linear Electronic Geometry: AB 2 Species (No Lone Pairs of Electrons on A) Polarity

4 Linear Electronic Geometry: AB 2 Species (No Lone Pairs of Electrons on A) Valence Bond Theory (Hybridization)

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6 Linear Electronic Geometry: AB 2 Species (No Lone Pairs of Electrons on A)

7 Trigonal Planar Electronic Geometry: AB 3 Species (No Lone Pairs of Electrons on A) Some examples of molecules with this geometry are: BF 3, BCl 3 All of these examples are trigonal planar, nonpolar molecules. Important exceptions occur when the three substituents are not the same! BF 2 Cl or BCI 2 Br will be trigonal planar and polar!

8 Trigonal Planar Electronic Geometry: AB 3 Species (No Lone Pairs of Electrons on A) Dot Formula Electronic Geometry

9 Trigonal Planar Electronic Geometry: AB 3 Species (No Lone Pairs of Electrons on A) Polarity

10 Trigonal Planar Electronic Geometry: AB 3 Species (No Lone Pairs of Electrons on A) Valence Bond Theory (Hybridization) 3s 3p Cl [Ne] 

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12 Trigonal Planar Electronic Geometry: AB 3 Species (No Lone Pairs of Electrons on A)

13 Tetrahedral Electronic Geometry: AB 4 Species (No Lone Pairs of Electrons on A) Some examples of molecules with this geometry are: CH 4, CF 4, CCl 4, SiH 4, SiF 4 All of these examples are tetrahedral, nonpolar molecules. Important exceptions occur when the four substituents are not the same! CF 3 Cl or CH 2 CI 2 will be tetrahedral and polar!

14 Tetrahedral Electronic Geometry: AB 4 Species (No Lone Pairs of Electrons on A)

15 Tetrahedral Electronic Geometry: AB 4 Species (No Lone Pairs of Electrons on A)

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