Molecular Shapes: VSEPR01

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Chapter 10
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Molecular Shapes VSEPR 01

• The approximate shape of molecules is given by
  Valence-Shell Electron-Pair Repulsion (VSEPR).

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Molecular Shapes VSEPR 02

• Step 01 Count the total electron groups.
• Step 02 Arrange electron groups to maximize
  separation.
• Groups are collections of bond pairs between two
  atoms or a lone pair.
• Groups do not compete equally for spaceLone
  Pair gt Triple Bond gt Double Bond gt Single
  Bond

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Molecular Shapes VSEPR 02

• Two Electron Groups Electron groups point in
  opposite directions.

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Molecular Shapes VSEPR 03

• Three Electron Groups Electron groups lie in the
  same plane and point to the corners of an
  equilateral triangle.

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Molecular Shapes VSEPR 06

• Four Electron Groups
• Electron groups point to the corners of a regular
  tetrahedron.

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Molecular Shapes VSEPR 09
Five Electron Groups Electron groups point to
the corners of a trigonal bipyramid.
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Molecular Shapes VSEPR 11

• Six Electron Groups Electron groups point to the
  corners of a regular octahedron.

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Molecular Shapes VSEPR 12