Dressen-Molecular Geometry

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Slide 1: 

The arrangement of atoms within a given molecule. Molecular Geometry ( Section 6.5 183-187 in your textbook) Valence Shell Electron Pair Repulsion = VSEPR

Slide 2: 

Is based on simple electrostatic repulsions of electron pairs Assumption This repulsion of electron pairs causes them to orientate as far from each other as possible. VSEPR Theory

Molecular Geometry Shapes : 

Molecular Geometry Shapes Linear Formula= AX2 Trigonal Planar Formula = AX3 V-shaped (Bent) Formula = : AX2 Tetrahedral Formula = AX4 Trigonal Pyramidal Formula = : AX3 Trigonal Bipyramidal Formula = AX5 . . T-shaped Formula = : A X3 See Saw Formula = : AX4 Octahedral Formula = AX6 Note: A –represents the central atom X – represents the attached atom

( AX2) : 

( AX2) 2 Bonding pairs 0 lone pairs Linear

AX3 : 

AX3 3 Bonding Pairs 0 lone pairs Trigonal Planar

.. : AX2 : 

.. : AX2 2 Bonding pairs 2 lone pairs V-shaped Bent

Tetrahedral ( AX4) : 

Tetrahedral ( AX4) 4 bonding pairs 0 lone pairs

Trigonal Pyramidal :AX3 : 

Trigonal Pyramidal :AX3 3 bonding pairs One lone pair

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